The ductile fracture criterion of stainless-steel tubes in the shearing process based on modified GTN model

被引：0
|
作者：
Dong J.-P. [1 ]
Wang S.-L. [1 ]
Zhou J. [1 ]
Yang B. [1 ]
Ma C. [1 ]
机构：
[1] State Key Laboratory of Mechanical Transmissions, University of Chongqing, Chongqing
来源：
Wang, Shi-Long (slwang@cqu.edu.cn) | 1600年 / Tsinghua University卷 / 38期
关键词：
Damage; Finite element method; Fracture criterion; GTN constitutive equation; Solid mechanics;
D O I：
10.6052/j.issn.1000-4750.2020.05.0303
中图分类号：
学科分类号：
摘要：
To improve the defect that the modified Gurson-Tvergaard-Needleman model (modified GTN model) cannot accurately simulate the shearing process of stainless-steel tubes, a displacement-related damage function is constructed as a new fracture criterion based on the original model. A VUMAT user subroutine of the modified model is developed in ABAQUS using the implicit backward Euler stress updating algorithm. A shear experiment of SUS304 stainless-steel tubes was carried out, and the accuracy and validity of the proposed method was verified by comparing the experimental and simulated results. Copyright ©2021 Engineering Mechanics. All rights reserved.
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页码：239 / 247
页数：8
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