Numerical simulation of a class of models that combine several mechanisms of dissipation: Fracture, plasticity, viscous dissipation

JOURNAL OF COMPUTATIONAL PHYSICS

卷:271

Article

Bonnetier, Eric¹  Jakabcin, Lukas¹  Labbe, Stephane¹  Replumaz, Anne² 

[1] Univ Grenoble Alpes, CNRS, Lab Jean Kuntzmann, Grenoble, France

[2] Univ Grenoble Alpes, CNRS, ISTerre, Grenoble, France

关键词: Quasistatic evolution;    Fracture;    Plasticity;   

DOI  :  10.1016/j.jcp.2014.03.044

来源: Elsevier

【 摘 要 】

We study a class of time evolution models that contain dissipation mechanisms exhibited by geophysical materials during deformation: plasticity, viscous dissipation and fracture. We formally prove that they satisfy a Clausius-Duhem type inequality. We describe a semi-discrete time evolution associated with these models, and report numerical 1D and 2D traction experiments, that illustrate that several dissipation regimes can indeed take place during the deformation. Finally, we report 2D numerical simulation of an experiment by Peltzer and Tapponnier, who studied the indentation of a layer of plasticine as an analogue model for geological materials. (C) 2014 Elsevier Inc. All rights reserved.

【 授权许可】

Free