New development of ductile fracture criterion and its application on forming process of light alloy sheet

被引：0
|
作者：
Zhao C.-C. [1 ]
Yang Z.-Y. [1 ]
Dong G.-J. [2 ]
Wang G.-K. [2 ]
机构：
[1] Key Laboratory of Advanced Forging & Stamping Technology and Science of Ministry of Education, Yanshan University, Qinhuangdao
[2] Hebei Key Laboratory of Special Delivery Equipment, Yanshan University, Qinhuangdao
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2020年 / 30卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Ductile fracture criterion; Fracture forming limit diagram; Fracture locus; Light alloy sheet;
D O I：
10.11817/j.ysxb.1004.0609.2020-35839
中图分类号：
TG [金属学与金属工艺];
学科分类号：
0805 ;
摘要：
Ductile fracture criterion is a macroscopic mechanics critical model established based on the microscopic fracture mechanism of metal materials. It has great value to the fracture analysis of the increasingly used light alloy sheet which has negligible necking before fracture. With the development of investigation to ductile fracture under different stress states, people have a new understanding on the microcosmic mechanism and macroscopic influencing factors of fracture. Based on the new cognition, ductile fracture criterion gets a new development. In this work, the development history of ductile fracture criterion is introduced and the characteristics and advantages of the new ductile fracture criterion are summarized. Simultaneously, the calculation methods of ductile fracture parameters in new criteria are also reported as well as the fracture forming limit diagram and fracture locus which are the two most important applications of ductile fracture criterion in the analysis of sheet metal forming process. © 2020, Science Press. All right reserved.
引用
收藏
页码：1791 / 1801
页数：10
相关论文
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