New modelling approach for micromechanical modelling of the elastoplastic behaviour

被引：0
|
作者：
Fajoui, Jamal [1 ]
Gloaguen, David [1 ]
Alimi, Amel [1 ,2 ]
Kchaou, Mohamed [2 ]
Jacquemin, Frederic [1 ]
Elleuch, Riadh [2 ]
机构：
[1] Univ Nantes, Inst Rech Genie Civil & Mecan, UMR CNRS 6183, 58 Rue Michel Ange,BP 420, F-44606 St Nazaire, France
[2] Ecole Nationale dIngenieurs sfax, Laboratoire Systemes Elect Mecan LASEM, Sfax 3038, Tunisia
来源：
RESIDUAL STRESSES IX | 2014年 / 996卷
关键词：
mechanical behavior; plasticity; dislocation; neutron diffraction; homogenization; self-consistent model; biphasic model; POLYCRYSTALS; COMPOSITES; FIELD;
D O I：
10.4028/www.scientific.net/AMR.996.112
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A new theoretical approach is developed to simulate the elastoplastic behaviour in cubic alloys during various strain-path changes. The polycristal is considered as a composite consisting of hard dislocation walls of high local dislocation density which are separated by soft regions of low local dislocation density. The improved elasto-plastic self-consistent method is applied to deduce the global behaviour of the aggregate. The model is tested by simulating the macroscopic behavior and the development of intergranular strains during different complex loads.
引用
收藏
页码：112 / +
页数：2
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