A NON-LOCAL DUCTILE FAILURE MODEL ACCOUNTING FOR VOID GROWTH AND COALESCENCE AT LOW AND HIGH STRESS TRIAXIALITY

被引：0

作者：

Van Dung Nguyen ^{[1
]}

Pardoen, Thomas ^{[2
]}

Noels, Ludovic ^{[1
]}

机构：

[1] Univ Liege, Computat & Multiscale Mech Mat, Liege, Belgium

[2] UCLouvain, Inst Mech Mat & Civil Engn, Ottignies, Belgium

来源：

7TH INTERNATIONAL CONFERENCE INTEGRITY-RELIABILITY-FAILURE (IRF2020) | 2020年

关键词：

ductile failure; nonlocal; void coalescence; necking; shearing;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A micromechanics-based numerical model of ductile material failure is developed, in which the void growth, necking coalescence and shearing coalescence phases are competing. This combination allows accounting for the triaxiality, Lode variable and shear effects. In order to avoid loss of solution uniqueness during the coalescence stages, a multiple-variable nonlocal implicit formulation regularizes the problem. This model allows reproducing cup-cone and slant fracture modes for round and plane strain specimens.

引用

页码：65 / 66

页数：2