EVALUATION OF DUCTILE FRACTURE CRITERIA IN A GENERAL THREE-DIMENSIONAL STRESS STATE CONSIDERING THE STRESS TRIAXIALITY AND THE LODE PARAMETER

查看全文 作　　者：Yanshan [1]Lou;Hoon [1]Huh

机构地区：[1]School of Mechanical,Aerospace and Systems Engineering,KAIST,335,Gwahangno,Daeduk Science Town,Daejeon,305-701,South Korea

出　　处：《Acta Mechanica Solida Sinica》索引2013年第26卷第6期,共17页

摘　　要：This paper is concerned with evaluation of various ductile fracture criteria in a general three-dimensional stress state of stress triaxiality,the Lode parameter and the equivalent plastic strain to fracture.Evaluation is carried out by comparing fracture loci constructed by fracture criteria to experimental results of Al2024-T351.Comparison demonstrates that the Modified Mohr-Coulomb criterion and a newly proposed criterion provide sufcient predictability of fracture strain.Moreover,evaluation is emphasized on the predicted cut-of value for stress triaxiality.The evaluation demonstrates that the Cockcroft-Latham,Brozzo,Oh,Ko-Huh and the new criteria coupled a reasonable cut-of value for ductile materials. 关键词：三向应力状态韧性断裂准则 MOHR-COULOMB准则三轴评估股东三维应力状态等效塑性应变

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EVALUATION OF DUCTILE FRACTURE CRITERIA IN A GENERAL THREE-DIMENSIONAL STRESS STATE CONSIDERING THE STRESS TRIAXIALITY AND THE LODE PARAMETER

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引证文献(7)

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