A multi-scale computational scheme for anisotropic hydro-mechanical couplings in saturated heterogeneous porous media

This contribution discusses a coupled two-scale framework for hydro-mechanical problems in saturated heterogeneous porous geomaterials. The heterogeneous nature of such materials can lead to an anisotropy of the hydro-mechanical couplings and non-linear effects. Based on an assumed model of the mesostructure, the average macroscopic hydro...

A rate-dependent multi-scale crack model for concrete

A multi-scale numerical approach for modeling cracking in heterogeneous quasi-brittle materials under dynamic loading is presented. In the model, a discontinuous crack model is used at macro-scale to simulate fracture and a gradient-enhanced damage model has been used at meso-scale to simulate diffuse damage. The traction-separation law for the...

A two-scale rate dependent crack model for quasi-brittle materials under dynamic loading

Viscoplasticity for instabilities due to strain softening and strain-rate softening

Fundamental issues in finite element analyses of localization of deformation

Wave propagation, localization and dispersion in a gradient-dependent medium

Wave propagation and localization in a rate-dependent cracked medium-model formulation and one-dimensional examples

Localisation in a Cosserat continuum under static and dynamic loading conditions