XII International Conference on Computational Plasticity: fundamentals and applications (COMPLAS 2013), Barcelona, 3-5 September, 2013
Proceedings of the XII International Conference on Computational Plasticity - Fundamentals and Applications
Held in Barcelona, Spain, 3-5 September 2013
A publication of:
International Center for Numerical Methods in Engineering (CIMNE) Barcelona, Spain
E. Oñate, D.R.J. Owen, D. Peric and B. Suárez (Eds.)
© The authors
Summary
Now showing items 1-137 of 137
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Efficient fe strategies for springback prediction – material modelling and computational aspects
(2013)
Conference report
Open AccessBlanks of sheet metal are characterized by an intrinsic plastic anisotropic behaviour resulting from the plastic deformation during the rolling of sheets. Another type of anisotropy is elastic anisotropy which might be ... -
Material modelling and parameter identification for sheet-bulk metal forming
(2013)
Conference report
Open AccessIn this paper an anisotropic material model at finite strain is implemented and utilised in a commercial Finite Element Software via a User-Subroutine. The material model is based on an additive split of the logarithmic ... -
Quasi-static mechanical behaviour of ti-6al-4v alloy at room temperature
(2013)
Conference report
Open AccessIn order to determine the mechanical behavior of a bulk TA6V alloy, a set of mechanical tests such as shear, compression, tensile monotonic tests, and tensile tests on notched samples are performed. The material is tested ... -
Characteristics of micro incremental in-plane bending of sheet metal using tiltable punch
(2013)
Conference report
Open AccessIncremental forming methods have gained interest in recent years as a forming technique for micro and fine components. This paper presents a newly developed incremental in-plane bending with tiltable punch for micro-metal ... -
The effect of die half angle in tube nosing with relieved die
(2013)
Conference report
Open AccessThis research concentrates on rotary nosing using cone shape dies, in particular using “relieved dies”. “Relieved die” is a cone-shape die with contact surfaces and grounddown relieved surfaces. The objective of this ... -
Evaluation of water film by reynolds' equation in deep drawing using high-pressured water jet
(2013)
Conference report
Open AccessThe authors had proposed a deep drawing method using high-pressured jet waters as lubricant. This method aimed to suppress the usage of oil or other chemical lubricants, which might require some additional processes for ... -
Numerical calculation of tensile test using a dumbbell-shaped in thickness direction specimen
(2013)
Conference report
Open AccessThis study is the product of a tensile test of a uniaxial tensile specimen having a thinner test section than parallel section, which is a tensile test piece with a dumbbell shape in the thickness direction, fabricated by ... -
Numerical simulation and experimental validation of texture in extruded wires of a bcc metal
(2013)
Conference report
Open AccessWe present a comparison between a viscoplastic crystal plasticity finite element simulation of the extrusion process applied to a bcc polycrystal and the experimental evaluation of the preferred orientation (texture) in a ... -
Propagation mechanism of non-uniform distribution of stress and strain in tension test
(2013)
Conference report
Open AccessElastic-plastic finite element analysis is carried out on tension test to check the uniformity of stress and strain that highly influences the result of numerical analysis in forming processes. Usually stress is calculated ... -
Unloaing and re-loading features of pre-strained steel at low temperature
(2013)
Conference report
Open AccessIn the present work the response of medium carbon steel is investigated experimentally and information on the features of initial loading, unloading, re-loading and inverse loading processes is collected. The experiment ... -
A porous media approach for foot biomechanics
(2013)
Conference report
Open AccessRecently a new computational model, based on the thermodynamically constrained averaging theory (TCAT), has been proposed to predict tumor initiation and proliferation [1, 2]. A similar mathematical approach is being ... -
Modeling and experimental investigations of the stress-softening behavior of soft collagenous tissues
(2013)
Conference report
Open AccessThis paper deals with the formulation of a micro-mechanically based dam-age model for soft collagenous tissues. The model is motivated by (i) a sliding filament model proposed in the literature [1] and (ii) by experimental ... -
Numerical simulation of severe plastic deformation during high pressure torsion
(2013)
Conference report
Open AccessThe principle of achieving high strength and superior properties in metal alloys through the application of severe plastic deformation has been exploited in the metal processing industry for many decades. The High Pressure ... -
A benchmark study on identification of inelastic parameters based on deep drawing processes using pso – nelder mead hybrid approach
(2013)
Conference report
Open AccessOptimization techniques have been increasingly used to identification of inelastic material parameters owing to their generality. Development of robust techniques to solving this class of inverse problems has been a challenge ... -
A mechanical behavior law for the numerical simulation of the mushy zone in welding
(2013)
Conference report
Open AccessThe aim of this work is to propose a mechanical behavior law dedicated to the mushy zone located between the solid phase and the weld pool in welding. The objective is to take into account of the influence of the mushy ... -
Aluminium extrusion analysis by the finite volume method
(2013)
Conference report
Open AccessPresent work proposes a novel numerical scheme to calculate stress and velocity fields of metal flow in axisymmetric extrusion process in steady state. Extrusion of aluminium is one main metal forming process largely applied ... -
Bending and springback prediction method based on multi-scale finite element analyses for high bendability and low springback sheet generation
(2013)
Conference report
Open AccessIn this study, a sheet bendability and springback property evaluation technology through bending test simulations is newly developed using our multi-scale finite element analysis code, which is based on the crystallographic ... -
Chaining of welding and finish turning simulations for austenitic stainless steel components
(2013)
Conference report
Open AccessThe chaining of manufacturing processes is a major issue for industrials who want to understand and control the quality of their products in order to ensure their in-service integrity (surface integrity, residual stresses, ... -
Lead extrusion analysis by finite volume method
(2013)
Conference report
Open AccessComputational numerical simulation is nowadays largely applied in the design and analysis of metal forming process. Extrusion of metals is one main forming process largely applied in the manufacturing of metallic products ... -
Modelling of material cutting with a material microstructure-level (MML) model
(2013)
Conference report
Open AccessIn this research work a material microstructure-level cutting model (MML cutting model) is presented. The crystal plasticity theory is adopted for modeling the cutting of the titanium alloy Ti–6Al–4V in orthogonal case. ... -
Numerical analysis of hot deep drawing of din 27MNCRB5 steel sheets under controlled stretching
(2013)
Conference report
Open AccessHot stamping has been widely studied and increasingly applied in the automotive industry. This process is characterized by its ability to stamp high strength steels, yielding products with high ... -
Numerical and experimental analysis of cold forming of titanium alloy sheets
(2013)
Conference report
Open AccessDue to an increasing demand for the titanium drawn-parts, mainly from the aerospace and car industries, the demand for expertise in sheet-titanium forming grows. Although titanium combine many valuable features like ... -
The physical and numerical modeling of cold ire draing process of biocompatible magnesium alloys
(2013)
Conference report
Open AccessThis paper is devoted to the new magnesium alloys used in medicine as a soluble implants. Feature of these alloys is a low technological ductility in cold forming. The problem of determination of the cold thin wire (diameter ... -
A stochastic framework for multiscale strength prediction using adaptive discontinuity layout optimisation (ADLO)
(2013)
Conference report
Open AccessThe prediction of strength properties of matrix-inclusion materials, which in general are random in nature due to their spatial distribution and variation of pores, particles, and matrix-inclusion interfaces, plays an ... -
Fe2-homogenization of micromorphic elasto-plastic materials
(2013)
Conference report
Open AccessIn this work, a homogenization strategy for a micromorphic–type inelastic material is presented. In the spirit of FE2, a representative volume element is attached to each macroscopic quadrature point. Due to the inherent ... -
Thermomechanical study of nanovoid cavitation in aluminium
(2013)
Conference report
Open AccessDefects such as vacancies and nanovoids are known to drastically modify the structural state of materials. Void nucleation, growth and coalescence are important micromechanical mechanisms underlying ductile crack growth ... -
Deim-based pgd for multi-parametric nonlinear model reduction
(2013)
Conference report
Open AccessA new technique for efficiently solving parametric nonlinear reduced order models in the Proper Generalized Decomposition (PGD) framework is presented here. This technique is based on the Discrete Empirical Interpolation ... -
An adaptive multi-level model for multi-scale ductile fracture analysis in heterogeneous aluminum alloys
(2013)
Conference report
Open AccessThis paper addresses the multi-scale modeling of ductile fracture in microstructures characterized by a dispersion of hard and brittle heterogeneities in a softer ductile matrix. An adaptive multi-level model is developed ... -
Bauschinger effect in thin metallic films by fem simulations
(2013)
Conference report
Open AccessUnpassivated free-standing gold and aluminum thin films (thickness ~ 200-400 nm, mean grain size dm,Au≈ 70-80nm, dm,Al≈ 120-200nm), subjected to tensile tests show Bauschinger effect (BE) during unloading [1, 2]. The focus ... -
Hot formability characterization and fracture locus determination of the CuZn40Pb2 brass alloy
(2013)
Conference report
Open AccessThe prediction of ductile fracture occurrence in hot forging processes is one of the main industrial issues, which needs damage models that have to be on one hand accurate and easily calibrated, but also easy enough to be ... -
Modeling of ductile damage using numerical analyses on the micro-scale
(2013)
Conference report
Open AccessThe presentation deals with a continuum damage model which has been generalized to take into account the effect of stress state on damage criteria as well as on evolution equations of damage strains. It is based on the ... -
Analysis of ultra low cycle fatigue problems with the barcelona plastic damage model
(2013)
Conference report
Open AccessThis paper presents a plastic formulation based on the Barcelona plastic damage model ([1], [2]) capable of predicting the material failure due to Ultra Low Cycle Fatigue. This is achieved taking into account the fracture ... -
Dynamics of structural defects and plasticity: models and numerical implementation for dynamical problems
(2013)
Conference report
Open AccessWe report the plasticity model with explicit description of kinetics of the material defects (dislocations, grain boundaries). This method becomes especially effective for computation of the dynamical deformation of materials ... -
A finite element strategy coupling a gradient-enhanced damage model and cohesive cracks for quasi-brittle materials
(2013)
Conference report
Open AccessA new combined strategy to describe failure of quasi-brittle materials is presented thus allowing the complete description of the process, from initiation of damage to crack propagation. For the early stages of the process, ... -
Crack propagation in thin shells by explicit dynamics solid-shell models
(2013)
Conference report
Open AccessA computational technique for the simulation of crack propagation due to cutting in thin structures is proposed. The implementation of elastoplastic solid-shell elements in an explicit framework is discussed. Finally, in ... -
Modeling and simulation of conducting crack propagation in ferroelectric single crystals under purely electrical loading
(2013)
Conference report
Open AccessWe present a phase-field model of fracture in ferroelectric single crystals for the simulation of conducting crack propagation under purely electrical loading. This is done by introducing the electrical enthalpy of a diffuse ... -
Objective multiscale analysis of random heterogeneous materials
(2013)
Conference report
Open AccessThe multiscale framework presented in [1, 2] is assessed in this contribution for a study of random heterogeneous materials. Results are compared to direct numerical simulations (DNS) and the sensitivity to user-defined ... -
Dynamic serviceability design of attic room floors in modern timber frame houses
(2013)
Conference report
Open AccessIn this paper, the vibrational performance of roof trusses for constructing the attic room floors with various geometric configurations was investigated using commercial finite element software – SAP2000. Vibrational ... -
Multi-scale analysis of timber framed structures filled with earth and stones
(2013)
Conference report
Open AccessThis paper deals with the seismic analysis of timber framed houses filled by stones and earth mortar using a multi-scale approach going from the cell to the wall and then to the house. At the scale of the elementary cells, ... -
Multi–scale modelling of timber–frame structures under seismic loads
(2013)
Conference report
Open AccessThis paper introduces a versatile hysteretic constitutive law, developed for various joints with steel fasteners commonly used in timber structures (nails, screws, staples, 3D connectors of bracket type, punched ... -
Modeling anisotropic damage in elasto-plastic materials with structural defects
(2013)
Conference report
Open AccessThe paper deals with models for elasto-plastic materials with continuously distributed micro defects (micro cracks, micro voids, extra-matte), compatible with the principle of imbalance of the free energy. As the plastic ... -
Modeling the hall-petch effect with a gradient crystal plasticity theory including a grain boundary yield criterion
(2013)
Conference report
Open AccessAbstract. A strain gradient crystal plasticity theory including the gradient of the equiv- alent plastic strain ∇γeq is discussed. A grain boundary yield condition is proposed in order to account for the ... -
3d numerical model of a confined fracture tests in concrete
(2013)
Conference report
Open AccessThe paper deals with the numerical simulation of a confined fracture test in concrete. The test is part of the experimental work carried out at ETSECCPB-UPC in order to elucidate the existence of a second mode of fracture ... -
Diffusion-reaction model for alkali-silica reaction in concrete
(2013)
Conference report
Open AccessA new diffusion-reaction model for the potentially deleterious Alkali-Silica Reaction (ASR) process in concrete is presented. The model involves three coupled diffusion processes, two in-goingand one out-goingfrom the ... -
Multiscale material model for asr-affected concrete structures
(2013)
Conference report
Open AccessOne of the most harmful degradation process for concrete structures is the alkali-silica reaction. This process starts at aggregate level with a gel swelling and can produce damage up to macro level, by compromising the ... -
An elastoplastic model for unsaturated expansive soils based on shakedown concept
(2013)
Conference report
Open AccessIt is important to model the behaviour of unsaturated expansive soils subjected to hydromechanical loadings, because these wetting and drying cycles alter significantly their hydromechanical behaviour which may cause a ... -
Improvement of irregular dtm for sph modelling of flow-like landslides
(2013)
Conference report
Open AccessIrregular topography of real slopes largely affects the propagation stage of flowlike landslides and accurate digital terrain models (DTMs) are absolutely necessary for realistic simulations and assessments. In this paper ... -
Sph propagation modelling of an earthflow from southern italy
(2013)
Conference report
Open AccessNatural slopes in clayey soils are often affected by failures which may cause the onset of landslides of the flow type travelling large distances and damaging buildings and major infrastructures. Particularly, the so-called ... -
Triaxial tests on frozen ground: formulation and modelling
(2013)
Conference report
Open AccessArtificial Ground Freezing (AGF) is a controllable process that can be used by engineers to stabilise temporarily the ground, provide structural support and/or exclude groundwater from an excavation until construction of ... -
A critical discussion on the usefulness and reliability of mathematical modeling for service life design of infrastructure
(2013)
Conference report
Open AccessIn view of the increasing age of existing structures asset managers are becoming more and more interested to have a clearer picture on the actual condition of the complete stock of existing infrastructure as to anticipate ... -
Life-cycle of fatigue sensitive structures under uncertainty
(2013)
Conference report
Open AccessFatigue is the one of the main contributors to problems related to structural safety of civil and marine structures. Life-cycle management (LCM) techniques considering various uncertainties can be used to predict the safe ... -
Models for reliability assessment of reinforced concrete structures in corrosive environments in conditions of a changing climate
(2013)
Conference report
Open AccessReinforced concrete (RC) structures deteriorate with time and corrosion of reinforcing steel is one of the main causes for that. In the paper a framework for reliabilitybased assessment of durability of RC concrete structures ... -
3D discrete element modeling of concrete: study of the rolling resistance effects on the macroscopic constitutive behavior
(2013)
Conference report
Open AccessThe Discrete Element Method (DEM) is appropriate for modeling granular materials [14] but also cohesive materials as concrete when submitted to a severe loading such an impact leading to fractures or fragmentation in the ... -
A mesoscale finite element simulation of intermittent plastic flow of micropillar compression under hybrid loading mode
(2013)
Conference report
Open AccessThe plastic deformation of the micropillar proceeds as a series of strain bursts, showing an intermittent plastic flow. In this work, we present a stochastic finite element method in crystal plasticity to describe the ... -
An analytical model for elasto-plastic buckling of columns
(2013)
Conference report
Open AccessThe theory of buckling strength of compression members in the plastic range has been extensively studied, and numerical methods already exist which deal with such behaviour. However, there is significant research interest ... -
An efficient numerical method for shakedown analysis
(2013)
Conference report
Open AccessThe algorithm proposed in [9] for incremental elastoplasticity is extended and applied to shakedown analysis. Using the three field mixed finite element proposed in [22] a series of mathematical programming problems or ... -
An implicit solving algorithm adapted to numerical identification for simple lattice discrete element models of quasi-brittle materials
(2013)
Conference report
Open AccessA lattice discrete element model is presented to model quasi-brittle mate-rials behavior. The model is developed to enhance latter numerical identification and characterization of quasi-brittle materials ... -
Application of the meshless procedure for the elastoplastic torsion of prismatic rods
(2013)
Conference report
Open AccessIn this paper torsion of prismatic bars considering elastic-plastic material behavior is studied. Based on the Saint-Venant displacement assumption and the Romberg-Osgood model for the stress-strain relation, the boundary ... -
Application of the method of fundamental solutions for inverse problems related to the determination of elasto-plastic properties of prizmatic bar
(2013)
Conference report
Open AccessThe problem of determining the elastoplastic properties of a prismatic bar from the given relation from experiment between torsional moment MT and angle of twist per unit of rod’s length θ is investigated as inverse problem. ... -
Assumed-strain finite element technique for accurate modelling of plasticity problems
(2013)
Conference report
Open AccessIn this work a linear hexahedral element based on an assumed-strain finite element technique is presented for the solution of plasticity problems. The element stems from the NICE formulation and its extensions. ... -
Automation of isogeometric formulation and efficiency consideration
(2013)
Conference report
Open AccessThis paper deals with automation of the isogeometric finite element formulation. Isogeometric finite element is implemented in AceGen environment, which enables symbolic formulation of the element code and the ... -
A bodner-partom visco-plastic dynamic sphere benchmark problem
(2013)
Conference report
Open AccessDeveloping benchmark analytic solutions for problems in solid and fluid mechanics is very important for the purpose of testing and verifying computational physics codes. Our primary objective in this research is to obtain ... -
Characterization and modeling of viscoelastic interface
(2013)
Conference report
Open AccessViscoelastic materials are commonly used as constrained thin layers in order to reduce the noise radiated by vibrating structures. The optimal design and placement of these viscoelastic interfaces requires an efficient ... -
Distributed Plasticity Analysis of Frame Structures in Rate Form
(2013)
Conference report
Open AccessDistributed plasticity beam column elements are able to efficiently track hysteretic nonlinear behavior of structures under static or dynamic loading. This is accomplished by a refined discretization of the element in ... -
Homogenized model for herringbone bond masonry: linear elastic and limit analysis
(2013)
Conference report
Open AccessA kinematic procedure to obtain in-plane elastic moduli and macroscopic masonry strength domains in the case of herringbone masonry is presented. The model is constituted by two central bricks interacting with their neighbors ... -
Hysteretic beam element with degrading bouc-wen models
(2013)
Conference report
Open AccessIn this work a beam element based on the finite element method, suitable for the inelastic dynamic analysis of structures is presented. The hysteretic beam element proposed by Triantafyllou and Koumousis [1] is extended ... -
Lifetime assessment for an ideal elastoplastic thick-walled spherical member under general mechanochemical corrosion conditions
(2013)
Conference report
Open AccessThe problem of the equal-rate mechanochemical wear of an elastic-perfectly plastic thick-walled spherical shell under internal and external pressure is solved analytically. The proposed solution allows to assess the time ... -
A new 3D-beam finite element including non-uniform torsion with the secondary torsion moment deformation effect
(2013)
Conference report
Open AccessIn this paper, a new 3D Timoshenko linear-elastic beam finite element including warping torsion will be presented which is suitable for analysis of spatial structures consisting of constant open and hollow structural section ... -
On the stability of the recently developed nice integration scheme
(2013)
Conference report
Open AccessThe paper deals with the integration of elasto-plastic constitutive models using recently developed NICE integration scheme [1],[2]. The emphasis is put on the stability of the integration, since this issue was not ... -
Optimizing the remeshing procedure by computational cost estimation of adaptive fem technique
(2013)
Conference report
Open AccessThe objective of adaptive techniques is to obtain a mesh which is optimal in the sense that the computational costs involved are minimal under the constraint that the error in the finite element solution is acceptable ... -
A finite element method for thermo-mechanical coupling analysis of shape memory alloys
(2013)
Conference report
Open AccessDue to strong thermo-mechanical coupling in shape memory alloys (SMAs), heat generation/absorption during forward/reverse phase transformation can cause temperature variations in the material; influencing its mechanical ... -
A thermoviscoplastic model with damage for simultaneous hot/cold forging analysis
(2013)
Conference report
Open AccessA constitutive model is presented for simultaneous hot/cold forming processes of steels. The phenomenological material theory is based on an enhanced rheological model and accounts temperature dependently for nonlinear ... -
Calibration and validation of plastic high strain rate models for alloy 718
(2013)
Conference report
Open AccessAlloy 718 (Inconel™ 718), composed mainly of nickel, iron and chromium has properties that are of interest in many high temperature applications. One such application is the containment structure in aero engines which ... -
Combined creep and plastic analysis with numerical methods
(2013)
Conference report
Open AccessThe combination of plastic and creep analysis formulation are developed in this paper. The boundary element method and the finite element method are applied in plates in order to do the numerical analysis. This new approach ... -
Crystal plasticity model calibration for 316l stainless steel single crystals during deformation
(2013)
Conference report
Open AccessType 316L austenitic stainless steel is an important structural material used for the in-core components and pressure boundaries of light water reactors. In order to study degradation mechanisms in such a steel, like crack ... -
Elastoplastic stress analysis of functionally graded disc under internal pressure– complas XII
(2013)
Conference report
Open AccessThe study deals with elastoplastic stress analysis of a hollow disk made of functionally graded materials (FGMs) subjected to an internal pressure. The material properties of disc are assumed to vary radially according to ... -
Homogenization of heterogeneous, fibre structured materials
(2013)
Conference report
Open AccessThis contribution presents a multi-scale homogenization method to model fibre structured materials. On the macroscopic level textiles are characterized by a large area-to-thickness ratio, such that a discretization with ... -
Numerical simulation based on FEM/MLS coupling for solid mechanics
(2013)
Conference report
Open AccessThis paper presents the development of Meshless Methods based on the weighted least squares approximation (MLS) [1,3,14] to solve 2D mechanical problems. A particular construction support of weight functions involved in ... -
Simulation of sheet-titanium forming of welded blanks
(2013)
Conference report
Open AccessThe increase in demand for the light and tough drawn-parts causes the growing interest in sheet metal forming of Tailor-Welded Blanks (TWB). Application of such blanks allows for achieving in one operation the drawn-parts ... -
Stress correlations of dislocations in a double-pileup configuration: a continuum dislocation density approach – complas XII
(2013)
Conference report
Open AccessDislocation motion in the crystal lattice of materials is the basis for macroscopic plasticity. While continuum models for describing the role of dislocations in plasticity have existed for decades, only recently have the ... -
Optimum design of magnetic field environment for axonal growth control in nerve cell regeneration process using electromagnetic field analyses
(2013)
Conference report
Open AccessIn this study, an optimum magnetic field environment for the nerve axonal extension and control of axonal growth direction in the nerve cell generation process was searched by using electromagnetic finite element analyses. ... -
Pulsatile non-newtonian blood flow in image-based models of carotid bifurcation
(2013)
Conference report
Open AccessPresent hemodynamical study is motivated by the ongoing clinical research at the University Hospital in Pilsen, Czech Republic. On the basis of provided CT scans, several carotid artery models were reconstructed and used ... -
Direct method-based statistical limit analysis of wc-co composites
(2013)
Conference report
Open AccessIn this paper, a direct method-based prediction of load-bearing capacity of nonperiodic WC-Co composites is presented. The main goal is to generalize the methodology of limit analysis on periodic heterogeneous media to ... -
C1− Continuous crack propagation for mixed-mode fracture problems
(2013)
Conference report
Open AccessIn this work a C1− continuous crack propagation algorithm is proposed to improve the numerical simulation of localized deformation patterns, using higher order elements. The algorithm is applied for a standard smeared crack ... -
Micro-modeling of stack bond masonry in compression using a plasticity law
(2013)
Conference report
Open AccessA set of experimental tests to determine the compressive strength of masonry stack prisms has been numerically simulated using a combined plasticity-smeared crack constitutive law employed in three-dimensional analysis. -
Non-linear fe modelling of seismic pounding and damped-mitigating interconnection between a r/c tower and a masonry church
(2013)
Conference report
Open AccessThe finite element analysis of pounding represents one of the most critical issues for the assessment of the seismic performance of R/C structures built at poor distance from adjacent buildings. The effects of pounding can ... -
Recent progress in microplane modelling of plain concrete
(2013)
Conference report
Open AccessDespite determined efforts in mathematical modelling of multiaxial behaviour of plain concrete by many researchers, the existing models have not achieved a full description of this complex behaviour. Among these models, the ... -
Formulation of an isogeometric shell element for crash simulation
(2013)
Conference report
Open AccessIn this paper, we propose, for the isogeometric analysis, a shell model based on a degenerated three dimensional approach. It uses a first order kinematic description in the thickness with transverse shear (Reissner-Mindlin ... -
Investigation of experimental research on the low velocity impact damage behavior of ncf composite plates – COMPLAS XII
(2013)
Conference report
Open AccessIn this study an experimental investigation is performed on the impact response of non-crimp fabric composite plates at room temperature. Chopped strand mat combi is used as reinforcing material and two kinds of matrix; ... -
Isogeometric analysis applied to frictionless large deformation elastoplastic contact
(2013)
Conference report
Open AccessThis paper focuses on the application of isogeometric analysis to model frictionless large deformation contact between deformable bodies and rigid surfaces that may be represented by analytical functions. The contact ... -
Numerical solution of perfect plastic problems with contact: part I - theory and numerical methods
(2013)
Conference report
Open AccessThe contribution deals with a static case of discretized elasto-perfectly plastic problems obeying Hencky’s law in combination with frictionless contact boundary conditions. The main interest is focused on the analysis of ... -
Numerical solution of perfect plastic problems with contact: part II - numerical realization
(2013)
Conference report
Open AccessThis contribution is a continuation of our contribution denoted as PART I, where the discretized contact problem for elasto-perfectly plastic bodies was studied and suitable numerical methods were introduced. In particular, ... -
Viscoelastic evaluation of biological soft tissue in crush process at subsonic level for anti-bird strike technology of airplane
(2013)
Conference report
Open AccessMiniaturization and lightening of airplane are advanced to improve its economic efficiency, and the safety technology of airplane design becomes difficult while the accident of bird-strike is increasing year by year. Then ... -
3D-Mesomechanical analysis of cracking and spalling of concrete subject to high temperatures
(2013)
Conference report
Open AccessIn this paper, an existing meso-structural model for concrete which had been applied to the study of the mechanical effects of high temperatures in 2D, is extended to 3D, and to more complex coupled thermo-mechanical ... -
A method for post-processing of finite element analyses to assess critical macroscopic voids
(2013)
Conference report
Open AccessA method for post-processing of finite element analyses to assess critical macroscopic voids is presented. One single, global analysis of the structure or component is carried out and then post-processed. By using a template ... -
Analyses of strain localisation in hdpe butterfly specimen during biaxial tests using digital image correlation
(2013)
Conference report
Open AccessThis work presents a study of high density polyethylene (hdpe) strain under biaxial loading. An Arcan apparatus is achieved in order to load a newly-designed flat specimen called “butterfly specimen” to various combinations ... -
Application of the continuum damage mechanics model in the three point bending test of Ti-6Al-4V titanium alloy specimens
(2013)
Conference report
Open AccessOne of the most important and challenging activities in the simulation of the mechanical behaviour of materials is the prediction of the failure phenomena. If well calibrated, damage models can simulate and predict the ... -
Evolution of nonlocal damage in steel under cyclic straining
(2013)
Conference report
Open AccessFor high dynamic excitation, e.g. by earthquakes, the vibrations of steel structures lead to inelastic material behavior. Hystereses, developing under cyclic loading, are responsible for the dissipation of energy. Additionally, ... -
Experimental characterization and comparison of planar and corrugated aluminum sheets
(2013)
Conference report
Open AccessTo evaluate the effect of the corrugation [1] on the mechanical behavior of aluminum plates, a corrugated sheet on aluminum alloy Al1050 is characterized under tensile mechanical tests at room temperature. To characterize ... -
Finite element analyses of fatigue crack growth under small scale yielding conditions modelled with a cyclic cohesive zone approach
(2013)
Conference report
Open AccessMode I fatigue crack growth is modelled and investigated with a cohesive zone approach. A 2D finite element boundary layer model under plane strain and small scale yielding conditions is used to generate fatigue ... -
Frictional interface crack-tip singular stress field in anisotropic
(2013)
Conference report
Open AccessThis study presents the asymptotic displacement and stress fields at the crack tip of frictional interface where slip can occur along the interface between two anisotropic composite laminates. The results show that real ... -
Implementation of a lode angle sensitive yield criterion for numerical modelling of ductile materials in the large strain range
(2013)
Conference report
Open AccessDuctile metallic materials are usually mechanically characterized in the large strain range by means of conventional laboratory tests, namely tensile and torsion test. The identification of the elastic-plastic equivalent ... -
Nonlocal approach for the analysis of damage in hybrid masonry under cyclic loading
(2013)
Conference report
Open AccessHybrid masonry is a recent technology that facilitates the use of concrete masonry unit blocks in connection with steel components in seismic areas. A continuum damage mechanics formulation is utilized due to the quasi-brittle ... -
Numerical and experimental investigations on the fatigue life of hot work tool steel X38CRMOV5-3 under forging process conditions
(2013)
Conference report
Open AccessHot forging dies experience during service excessive cyclic thermo-mechanical, tribological as well as chemical loads. These loads occur in a repeated manner and may cause premature fatigue failure of the forming tools and ... -
Numerical simulation of nonisothermal plasticity and thermomechanical fatigue of turbomachinery components
(2013)
Conference report
Open AccessModel of cyclic stress-strain curve and corresponded damage model are developed for simulation of nonisothermal cyclic loading and for estimating life time of turbomachinery components. Material cyclic model describes ... -
Seismic Evaluation of the Ca hedral of Valencia (Spain) applying a scalar damage model
(2013)
Conference report
Open AccessAshlars structures in Gothic cathedrals are designed to allow light get into the building. For this reason exterior walls turn into glazed large windows. The structural system which permits achieving this target is formed ... -
Stepwise advancing strategy for the simulation of fatigue problems
(2013)
Conference report
Open AccessA time advance strategy for cyclic loading will be presented, applied to the fatigue formulation first proposed by [1]. The coupling of both formulations provides a comprehensive approach to simulate high cycle fatigue ... -
Advanced mechanical simulation models for automatic panel benders
(2013)
Conference report
Open AccessWith automatic panel benders complete products are manufactured from sheet metal. In order to achieve short cycle times with high flexibility, a deep insight into the non-linear bending process is required. For this reason, ... -
Advanced modeling of the out-of-autoclave thermoplastics prepreg consolidation
(2013)
Conference report
Open AccessNowadays, composite materials are replacing metallic ones thanks to their excellent mechanical performances and reduced weight. However, many difficulties are encountered during composite forming processes. In fact, autoclave ... -
Calculation of mechanical and thermal influences during coiling of hot strip
(2013)
Conference report
Open AccessCoiled steel strip is the final product from flat hot rolling processes. With increasing demand for higher quality of hot rolled strips, especially the evolution of strip flatness during and after coiling becomes a crucial ... -
Experimental and numerical analysis of the flow behaviour of magnesium wrought alloy AZ31 for deep drawing processes at elevated temperatures
(2013)
Conference report
Open AccessIn the present paper, the flow behaviour of the magnesium wrought alloy AZ31 is analysed experimentally and numerically. Especial in deep drawing processes is the knowledge of the flow behaviour important. Depending on the ... -
Fast simulation of a flat cross wedge rolling process
(2013)
Conference report
Open AccessIn this paper, a new approach for a Fast Simulation of flat cross wedge rolling processes is presented. The approach is based on a preliminary research project of the Institute of Forming Technology and Machines (IFUM) of ... -
Industrial application of advanced adaptive concepts for automatic panel benders
(2013)
Conference report
Open AccessRecently, the requirements on sheet metal production processes have increased significantly. Highest precision and flexibility with efficient energy consumption and short cycle times can be achieved by advanced concepts ... -
Investigation of surface topography evolution of sheet aluminum under pressure and tension
(2013)
Conference report
Open AccessBesides tool parameters and work piece properties, the accuracy of the finite element analysis depends much on contact conditions between the sheet and the tool. To a large extent, the contact conditions are determined by ... -
Modeling of high speed friction stir spot welding using a lagrangian finite element approach
(2013)
Conference report
Open AccessFriction stir spot welding (FSSW) has been shown to be capable of joining steels of very high strength, while also being very flexible in terms of controlling the heat of welding and the resulting microstructure of the ... -
Multi-objective design optimisation of a 3D-rail stamping process using a robust multi-objective optimisation platform (RMOP)
(2013)
Conference report
Open AccessThe paper investigates the multi-objective design optimisation of a stamping process to control the final shape and the final quality using advanced high strength steels. The design problem of the stamping process is ... -
On the influence of material properties in sheet bending processes
(2013)
Conference report
Open AccessIn order to achieve the high performance and precision requirements of modern sheet bending processes, an appropriate implementation of material properties is essential. Experiments have shown that even variations within ... -
Simulation of deformation of layered sheet during micro powder imprinting process
(2013)
Conference report
Open AccessThis paper reports simulation of deformation during micro powder imprinting process, which is a newly developed process to form micro patterned surface on ceramic sheets. The process is proposed as a combined process of ... -
Simulation of material consequences induced by fsw for a trigonal pin
(2013)
Conference report
Open AccessThe numerical simulation of Friction Stir Welding processes involves the coupling of a solid mechanics approach under large strains and large strain rates and heat transfer. The eulerian formalism leads to specially efficient ... -
Anisotropy effects in a deep excavation in stiff clay
(2013)
Conference report
Open AccessThis paper tackles the issues related to the excavation of a horizontal gallery carried out in Boom clay, a tertiary clay that hosts the Underground Laboratory of the Belgium Nuclear Agency (SCK-CEN). The gallery is 85 m ... -
Constitutive models for peat - a review
(2013)
Conference report
Open AccessThis paper presents a review of the main constitutive models for peat and other highly organic soils having extremely high water content. At present, predictions of the geomechanical behaviour of such soils for design ... -
Elastoplastic modelling of a foundation on an unsaturated soil
(2013)
Conference report
Open AccessThis paper presents a coupled flow-deformation finite element analysis of a shallow foundation on an unsaturated loosely compacted silt subjected to variations in the water level. The behaviour of the silt foundation was ... -
H-adaptive finite element analysis of consolidation problems in geomechanics
(2013)
Conference report
Open AccessIn this paper, a computational framework based on the h-adaptive finite element strategy is presented for the solution of consolidation problems in geomechanics. The efficiency and performance of alternative error estimation ... -
Limit analysis for porous materials applied for slope stability analysis
(2013)
Conference report
Open AccessSlope stability analysis is a classical geotechnical problem. It aims to characterize the potential failure surface and the slope safety factor for a given geometry and loading conditions. From a mechanical ... -
On integration strategies for perzyna-type viscoplasticity, and application to zero-thickness interface elements
(2013)
Conference report
Open AccessIn this paper, Perzyna-type viscoplastic rate equations are integrated for a time step by considering the step as stress-driven. Depending on how the increment is imposed (constant, linear etc.), ... -
Relative contributions of solid skeleton visco-plasticity and water viscosity to the poro-mechanics behavior of callovo-oxfordian claystone
(2013)
Conference report
Open AccessThe Callovo-Oxfordian claystone is a saturated porous medium. Its transfer properties, including its low permeability [16] make it an interesting candidate for underground radioactive waste disposal. The drained tests ... -
THMC modelling of jet grouting
(2013)
Conference report
Open AccessA framework for the study of the jet-grouting hydration reaction and of the associated thermo-hydro-mechanical and chemical (THMC) interactions with the surrounding soils has been developed. In this work, we summarize the ... -
Unique critical state single-surface anisotropic hyperplasticity
(2013)
Conference report
Open AccessThis paper presents the theoretical development and algorithmic implementation of a single surface anisotropic hyperplasticity model. The model extends the isotropic family of models developed by Coombs and Crouch (2011) ... -
Zero-thickness interface elements with h-m coupling, formulation and applications in geomechanics
(2013)
Conference report
Open AccessPrevious developments on zero-thickness interface elements for coupled Hydro-Mechanics problems are briefly described, followed by some new geomechanical applications, particularly to hydraulic fracture in rock. The results ... -
Numerical simulations of submerged and pressurised X65 steel pipes – COMPLAS XII
(2013)
Conference report
Open AccessWhile in service, pipelines may from time to time be exposed to impact loads from anchors or trawl gear. A lot of parameters influence the behaviour of the pipeline during impact, e.g. the diameter and thickness of the ... -
Piezoelectric fem analysis of surface acoustic wave sensor
(2013)
Conference report
Open AccessThe paper is focused on modeling and simulation of surface acoustic wave devices using finite element method, especially by code ANSYS. SAW sensor is made of piezoelectric GaN layer, in which the Rayleigh waves are generated, ... -
A link between the phenomenological and physical modelling of transformation-induced plasticity
(2013)
Conference report
Open AccessIn high temperature shape memory alloys, the inelastic deformation mechanism is a combination of the transformation strain, viscoplastic strain in austenitic and martensitic phases, and transformation-induced plasticity. ... -
Construction of 3d statistically similar rves for dual-phase steel microstructures
(2013)
Conference report
Open AccessA method for the construction of 3D Statistically Similar RVEs for dual-phase steel (DP steel) microstructures in presented in this paper. DP steels have enhanced material properties compared to conventional steels which ... -
Crystal texture evolution analyses in metal drawing processes by using two-scale finite element method
(2013)
Conference report
Open AccessRecently, the crystallographic control technology in the aluminum wire drawing process has been a key technology in the aluminum industries, which produces high-strength wires for the electric, automotive and aircraft ... -
Modeling flows in periodically heterogeneous porous media with deformation-dependent permeability
(2013)
Conference report
Open AccessThe paper proposes a non-linear model of the Biot continuum. The nonlienarity is introduced in terms of the material coefficients which are expressed as linear functions of the macroscopic response. These functions are ... -
Multiscale resolution continuum theory for elastic plastic material with damage, an implicit 3D implementation
(2013)
Conference report
Open AccessThe multiscale resolution continuum theory (MRCT) [1] is a higher order continuum theory in which additional kinematic variables are added to account for the size effect at several distinct length scales. This remedies the ... -
The influence of grain size distribution on strain hardening behavior for dual phase steels using statistica ly informed artificial microstructure model and crystal plasticity
(2013)
Conference report
Open AccessDual phase steels are well suited to the automotive application. Their microstructures comprise constituents of strong distinction in mechanical properties. As a result, dual phase steels exhibit ...
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