A New Methodology for Ductile Fracture Criteria to Predict the Forming Limits

被引：0

作者：

Fahrettin Ozturk

Daeyong Lee

机构：

[1] Nigde University,Department of Mechanical Engineering

[2] Rensselaer Polytechnic Institute,Department of Mechanical Engineering

来源：

Journal of Materials Engineering and Performance | 2007年 / 16卷

关键词：

ABAQUS; ductile fracture criteria; formability; forming limit diagram; out-of-plane strain;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The main objective of this study was to develop an improved method for an application of ductile fracture criteria to predict forming limit diagram (FLD) of the sheet metals. Neck initiation was studied experimentally and numerically for a tensile test. Based on the results, a new methodology regarding the ductile fracture criteria was proposed to estimate forming limits. The new methodology states that the fracture criteria constant could be calculated at a thickness strain in the range of 20–25%, and be considered as a critical value of the ductile fracture criteria for strain localization. The new proposed methodology was successful in predicting the left side of the FLD and more refinement is needed to predict the right side of the FLD.

引用

页码：224 / 228

页数：4

共 31 条

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