Numerical Simulation for Studying Constraint Effect on Ductile Fracture Initiation Using Complete Gurson Model

被引：0

作者：

Younise, Bashir ^{[1
]}

Rakin, Marko ^{[2
]}

Medjo, Bojan ^{[2
]}

Sedmak, Aleksandar ^{[1
]}

机构：

[1] Univ Belgrade, Fac Mech Engn, Belgrade, Serbia

[2] Univ Belgrade, Fac Technol & Met, Belgrade, Serbia

来源：

FME TRANSACTIONS | 2010年 / 38卷 / 04期

关键词：

ductile fracture; transferability; constraint effect; welded specimens;

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：

Ductile fracture initiation in high-strength low alloyed welded steel joints is predicted using micromechanical complete Gurson model (CGM). The crack tip constraint and variation of stress triaxiality in ligament are considered on single-edge notch bend SE(B) and compact tension C(T) specimens, including the effect of strength mismatching and different weld metal width. According to the analysis of stress triaxiality in front of the crack tip, transferability of fracture initiation parameter was studied. As a result of the analyses on specimens, fracture initiation parameter determined by using CGM can be transferred from one geometry to another if their triaxial conditions are found to be similar.

引用

页码：197 / 202

页数：6

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