Browsing by Subject "Resistència de materials"
Now showing items 1-20 of 236
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A boundary algebraic formulation for plane strain elastodynamic scattering
(Society for Industrial and Applied Mathematics (SIAM), 2018)
Article
Open AccessSolving of elastodynamic problems arises in many scientific fields such as wave propagation in the ground, non-destructive testing, vibration design of buildings, or vibroacoustics in general. An integral formulation based ... -
A combined XFEM phase-field computational model for crack growth without remeshing
(Springer, 2020-10-07)
Article
Restricted access - publisher's policyThis paper presents an adaptive strategy for phase-field simulations with transition to fracture. The phase-field equations are solved only in small subdomains around crack tips to determine propagation, while an XFEM ... -
A comparative study on homogenization strategies for multi-scale analysis of materials
(Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013-02-01)
Book
Open AccessOne of the most important engineering tasks over the years has been the design and manufacture of increasingly sophisticated structural materials as a result of the requirements related to the technological progress. In ... -
A finite element approach to the simulation of hydraulic fractures with lag
(2013)
Article
Open AccessWe presented a finite-element-based algorithm to simulate plane-strain, straight hydraulic fractures in an impermeable elastic medium. The algorithm acCOllllts for the nonlinear coupling between the fluid pressure and the ... -
A four-noded quadrilateral element for composite laminated plates/shell using the refined zigzag theory
(2012-06)
External research report
Open AccessA new bilinear 4-noded quadrilateral element (called QLRZ) for the analysis of composite laminated and sandwich plates/shells based on the refined zigzag theory (RZT) proposed by Tessler et al. [1] is presented. The element ... -
A general methodology for deriving shear contrained Reissner Mindlin plate elements
(1990-06)
External research report
Open Access -
A genetic algorithm optimized fractal model to predict the constriction resistance from surface roughness measurements
(2017-06-09)
Article
Open AccessThe electrical contact resistance greatly influences the thermal behavior of substation connectors and other electrical equipment. During the design stage of such electrical devices, it is essential to accurately predict ... -
A new bipenalty formulation for ensuring time step stability in time domain computational dynamics
(John Wiley & Sons, 2012-04-20)
Article
Open Access -
A second-order face-centred finite volume method for elliptic problems
(2020-01-01)
Article
Restricted access - publisher's policyA second-order face-centred finite volume method (FCFV) is proposed. Contrary to the more popular cell-centred and vertex-centred finite volume (FV) techniques, the proposed method defines the solution on the faces of the ... -
A simple microstructural viscoelastic model for flowing foams
(2019-03)
Article
Open AccessThe numerical modelling of forming processes involving the flow of foams requires taking into account the different problem scales. Thus, in industrial applications a macroscopic approach is suitable, whereas the macroscopic ... -
A stable XFEM formulation for multi-phase problems enforcing the accuracy of the fluxes through Lagrange multipliers
(2013-11-02)
Article
Open AccessWhen applied to diffusion problems in a multi-phase setup, the popular extended finite element method (XFEM) strategy suffers from an inaccurate representation of the local fluxes in the vicinity of the interface. The XFEM ... -
A stochastic model for soft tissue failure using acoustic emission data
(2015-07-15)
Article
Open AccessThe strength of soft tissues is due mainly to collagen fibers. In most collagenous tissues, the arrangement of the fibers is random, but has preferred directions. The random arrangement makes it difficult to make deterministic ... -
Additioning alfa fibres in cement mortar
(Universidad Católica de Chile (UC), 2018)
Article
Open AccessCement mortar is a broadly used construction material. Adding fibres into the fresh mortar is an effective reinforcing technique to overcome the drawbacks related with the little tensile and flexural strength. Using natural ... -
Adiciones minerales puzolánicas a los morteros de cal (metacaolín y diatomeas): análisis de sus efectos físicos y mecánicos
(Universitat Politècnica de Catalunya, 2008-06-26)
Master thesis (pre-Bologna period)
Restricted access - author's decisionEste trabajo final de carrera intenta aportar algunos datos válidos y conclusiones que, deducidas a partir de un diseño experimental, permitan perfilar posibilidades de aplicación en las adiciones puzolánicas añadidas a ... -
Alcance del uso de fibras estructurales para el refuerzo del hormigón en forjado tipo losa para edificación
(Universitat Politècnica de Catalunya, 2016-06)
Minor thesis
Open AccessHistóricamente ha sido necesario para la construcción de edificios el uso de forjados resistentes para un mejor aprovechamiento del suelo. Con el transcurso del tiempo ha habido una evolución de la tipología y materiales ... -
An anisotropic microsphere-based approach for fiber orientation adaptation in soft tissue
(2011)
Article
Open AccessEvolutionary processes in biological tissue, such as adaptation or remodeling, represent an enterprising area of research. In this paper, we present a multiscale model for the remodeling of fibered structures, such as ... -
An atomistic-based foliation model for multilayer graphene materials and nanotubes
(2013-01)
Article
Open AccessWe present a three-dimensional continuum model for layered crystalline materials made out of weakly interacting two-dimensional crystalline sheets. We specialize the model to multilayer graphene materials, including ... -
Analysis of fluid soil-structure interaction problems with the particle finite element method (PFEM)
(2012)
External research report
Open AccessWe present some developments in the Particle Finite Element Method (PFEM) for analysis of coupled problems in mechanics involving fluid-soil-structure interaction (FSSI). The PFEM uses an updated Lagrangian description to ... -
Analysis of the electromagnetic signature of reinforced concrete structures for nondestructive evaluation of corrosion damage
(2012-04)
Article
Restricted access - publisher's policyThis paper presents a nondestructive corrosion damage detection method for reinforced concrete structures based on the analysis of the electromagnetic signature of the steel rebar corrosion. The signature of the corrosion ... -
Analytical method for the assessment of unreinforced brick masonry walls subjected to eccentric compressive loads
(2014-12-30)
Article
Open AccessSlender unreinforced masonry walls are likely to fail due to mechanism formation when they are subjected to eccentric compression loads causing second order bending effects. A practical analytical formulation is herein ...