DUCTILE FRACTURE SIMULATIONS USING A MULTI-SURFACE COUPLED DAMAGE-PLASTICITY MODEL

被引：0

作者：

Reddi, D. ^{[1
]}

Keralavarma, S. M. ^{[1
]}

机构：

[1] Indian Inst Technol Madras, Dept Aerosp Engn, Madras 600036, Tamil Nadu, India

来源：

COMPUTATIONAL PLASTICITY XIV: FUNDAMENTALS AND APPLICATIONS | 2017年

关键词：

Ductile Fracture; Void Growth; Void Coalescence; Shear Failure; VOID COALESCENCE; COMBINED TENSION; RUPTURE; GROWTH; STRAIN; SHEAR; LOCALIZATION; CRITERION; FAILURE;

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 paper, an isotropic porous metal plasticity model accounting for both void growth by diffuse plastic deformation and void 'coalescence' by localization of plastic flow in the inter-void ligaments is presented. Predictions for the effective stress-strain response, evolution of damage and the strains to failure are obtained by integrating the model numerically under triaxial proportional loading conditions. The model predictions are compared with results from micromechanical finite element simulations of the average response of voided unit cells under similar loading conditions. It is shown that the model predictions for the failure strains as a function of the loading path are in good qualitative agreement with the results of the cell model simulations.

引用

页码：534 / 544

页数：11

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