RATE-INDEPENDENT FINITE-DEFORMATION ELASTOPLASTICITY - A NEW EXPLICIT CONSTITUTIVE ALGORITHM

被引：47

作者：

NEMATNASSER, S

机构：

[1] Center of Excellence for Advanced Materials, Department of Applied Mechanics and Engineering Sciences, University of California, San Diego

来源：

MECHANICS OF MATERIALS | 1991年 / 11卷 / 03期

关键词：

D O I：

10.1016/0167-6636(91)90005-K

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper summarizes the results of a recent breakthrough in explicit constitutive computational algorithms for finite-element calculations of large-deformation rate-independent elastoplasticity, using the example of the J2 yield condition and flow rule with isotropic hardening. The new algorithm provides a direct, explicit, and always nearly exact estimate of the yield surface and all stress components, for any prescribed deformation increment (large or small) in one single step with no iterations, or in any desired number of substeps. The algorithm does not depend on radial return, and can accommodate nonsmooth yield surfaces. This generalization is also briefly discussed.

引用

页码：235 / 249

页数：15

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