Authors
Weijie Liu, Khemais Saanouni, Carl Labergère, Houssem Badreddine, Samuel Forest, Ping Hu,
Title
Nonlocal constitutive equations of elasto-visco-plasticity coupled with damage and temperature
In
MATEC Web of Conferences
Volume
80
Issue
01002
Pages
7
Year
2016
Publisher's URL
https://doi.org/10.1051/matecconf/20168001002
Indexed by
Abstract
In this paper, the nonlocal anisothermal elasto-visco-plastic constitutive equations strongly coupled with ductile isotropic damage, nonlinear isotropic hardening and kinematic hardening are developed to model the material behaviour under finite strain. The new micromorphic variable of damage is introduced into the principle of virtual power and new additional balance equations are obtained. Thermodynamically-consistent nonlocal constitutive equations are then deduced. The evolution equations are deduced from the generalized normality rule for the Norton-Hoff visco-plastic potential. This model is used to simulate various material responses under different velocities at high temperature. The micromorphic parameters of damage: micromorphic density and H moduli are studied to examine the effects of micromorphic damage. Biaxial tension is performed to make a comparison between the local damage model and the micromorphic damage model.
Affiliations
Offprint