Micromechanical modelling of the elastoplastic behaviour of metallic material under strain-path changes

被引：12

作者：

Fajoui, Jamal ^{[1
]}

Gloaguen, David ^{[1
]}

Courant, Bruno ^{[1
]}

Guillen, Ronald ^{[1
]}

机构：

[1] Univ Nantes, GeM, Inst Rech Genie Civil & Mecan, Ecole Cent Nantes,CNRS,UMR 6183, F-44602 St Nazaire, France

来源：

COMPUTATIONAL MECHANICS | 2009年 / 44卷 / 02期

关键词：

Plasticity; Dislocations; Microstructural; Homogenization; Self-consistent model; Non-local hardening; ELASTIC-PLASTIC BEHAVIOR; X-RAY-DIFFRACTION; RESIDUAL-STRESSES; POLYCRYSTALS; TEXTURE; ANISOTROPY; DEFORMATION; PREDICTION; EVOLUTION; MICROSTRUCTURE;

D O I：

10.1007/s00466-009-0374-7

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

A two-level homogenization approach is applied for the micromechanical modelling of the elastoplastic material behaviour during various strain-path changes. A mechanical description of the grain is developed through a micro-meso transition based on a modified elastoplastic self-consistent approach which takes into account the dislocation evolution. Next, a meso-macro transition using a self-consistent model is used to deduce the macroscopic behaviour of the polycrystal. A correct agreement is observed between the simulations and the experimental results at the mesoscopic and macroscopic levels.

引用

页码：285 / 296

页数：12

共 45 条

[1] Influence of strain path in the mechanical properties of drawn aluminum alloy bars [J].