ON MODELING ANISOTROPY IN DEFORMATION PROCESSES INVOLVING TEXTURED POLYCRYSTALS WITH DISTORTED GRAIN SHAPE

被引：65

作者：

MATHUR, KK

DAWSON, PR

KOCKS, UF

机构：

[1] Thinking Machines Corporation, Cambridge, MA

[2] Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY

[3] Center for Materials Science, Los Alamos National Laboratory, Los Alamos, NM

来源：

MECHANICS OF MATERIALS | 1990年 / 10卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0167-6636(90)90042-E

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A mathematical formulation is presented which uses rate-dependent polycrystalline plasticity to model the development of plastic anisotropy in bulk forming processes. The formulation assumes that underlying a material point on a continuum scale is a collection of anisotropic, contiguous grains. The mechanical response at a continuum level is derived from the response of individual grains suitably averaged over all grains in the aggregate. The effects of preferred orientation (texture) and of the evolving grain shape on the directionality to the flow properties of the polycrystal are included. A general numerical framework is described for incorporating this complex material behavior in a finite element formulation. As an application, texture development during the flat rolling of aluminum sheets is presented. The simulation predictions have been compared with reported experimental data and with a previous study where the effects of grain shape were neglected.

引用

页码：183 / 202

页数：20

共 27 条

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