COMPLAS
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Multi-surface description of temperature and strain rate-dependent damage initiation and growth in ductile viscoplastic materials
(2011)
Conference report
Open AccessA phenomenological modelling approach has been developed, based on some salient physical effects regarding void growth vs. plastic straining, to describe the transition behaviour between dense metal plasticity and micro-porous ... -
A method of two-scale chemo-thermal-mechanical coupling for concrete
(2011)
Conference report
Open AccessThe Alkali Silica Reaction(ASR) is one of the most important reasons to cause damage in cementitious constructions, which can be attributed to the expansion of hydrophilic gel produced in the reaction. In this contribution, ... -
The influence of load misalignment on frp-concrete bond behaviour, a numerical study
(2011)
Conference report
Open AccessVarious authors have used pure shear test models in order to describe the bond between FRP and concrete. However, considerable dispersion of the parameters which characterize the bond behaviour has been found. In pure shear ... -
Meso-macro numerical approach to macroscopic permeability of fractured concrete – COMPLAS XI
(2011)
Conference report
Open AccessIn this paper, a sequential multi-scale framework to solve mass (air or water) transfer problems is described. Numerical results are checked against mechanical and permeation experimental datas from a reinforced concrete ... -
High temperature effects in mortar and concrete specimens using a meso-mechanical model with fracture based zero-thickness interface elements
(2011)
Conference report
Open AccessThis paper describes recent numerical simulation results of a purely mechanical study of the effects of high temperature in mortar and concrete. The material has been considered as a two-phase composite, with different ... -
An elasto-plastic damage model for concrete
(2011)
Conference report
Open AccessConstitutive modeling of concrete using continuum damage mechanics and plasticity theory is presented in this work. In order to derive the constitutive equations the strain equivalence hypothesis is adopted. Menetrey-William ... -
Towards the effective behaviour of polycrystalline microstructures at finite strains
(2011)
Conference report
Open AccessIt is well known that metals behave anisotropically on their microstructure due to their crystalline nature. FE-simulations in the metal forming field however sometimes lack the right macroscopic anisotropies as their type ... -
Time-dependent mesoscopic modelling of masonry using embedded weak discontinuities
(2011)
Conference report
Open AccessIn this contribution, a rate-dependent mesoscopic masonry model is presented in which the mortar joints are incorporated by embedded weak discontinuities based on partitions of unity. Within the discontinuities, both an ... -
Simulation of DP-steels based on statistically similar representative volume elements and 3D EBSD data
(2011)
Conference report
Open AccessMicrographs of a dual-phase steel obtained from a EBSD-FIB imaging are analyzed with respect to a set of statistical measures. Then the applicability of this data to the construction of statistically similar representative ... -
Pore-space controlled hardening model in plasticity of porous materials: application to the analysis of indentation experiments
(2011)
Conference report
Open AccessBased on a multi-scale approach comprising a multi-scale material model and a respective finite-element (FE) analysis tool, the indentation response of porous materials is examined in this paper. The considered material is ... -
Multi-scale failure for heterogeneous materials: link with morphological modeling – COMPLAS XI
(2011)
Conference report
Open AccessA 3D meso-scale model for failure of heterogeneous quasi-brittle materials is presented. At such scale, concrete can be represented as an heterogenous material with two phases, where aggregates are included within the ... -
Hydro-mechanical modeling of two-phase fluid flow in deforming, partially saturated porous media with propagating cohesive cracks using the extended finite element method
(2011)
Conference report
Open AccessIn the present paper, a fully coupled numerical model is developed for the hydromechanical analysis of deforming, progressively fracturing porous media interacting with the flow of two immiscible, compressible wetting and ...
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