IDENTIFICATION OF NONLINEAR KINEMATIC HARDENING PARAMETERS FOR SHEET METAL FROM BIAXIAL LOADING TESTS

被引：0

作者：

Soehngen, B. ^{[1
]}

Willner, K. ^{[1
]}

机构：

[1] Friedrich Alexander Univ Erlangen Nurnberg, Inst Appl Mech, Egerlandstr 5, D-91058 Erlangen, Germany

来源：

COMPUTATIONAL PLASTICITY XIV: FUNDAMENTALS AND APPLICATIONS | 2017年

关键词：

Kinematic Hardening; Anisotropic Plasticity; Parameter Identification; Biaxial Loading; Sheet Metal; ALGORITHMS;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this work an anisotropic material model at finite strains with nonlinear mixed (isotropic and kinematic) hardening is used for the identification of the hardening parameters of sheet steel. The algorithmic system is thereby reduced to a single equation return mapping. For the identification, a cruciform specimen is loaded biaxially in an alternating shear test to provoke the kinematic hardening behavior and prevent the sheet from buckling. The material parameters are found through an optimization strategy by comparing the deformation field from the experiment to that from a finite element (FE) simulation. The resulting cost function is minimized by means of a gradient-based method.

引用

页码：373 / 384

页数：12

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