高压物理学报2019，Vol.33Issue(1)：90-99,10.DOI:10.11858/gywlxb.20180613
金属材料失效分析的新方法
A New Approach for the Failure of Metallic Materials
周琳 1文鹤鸣1
作者信息
- 1. 中国科学技术大学中科院材料力学行为和设计重点实验室,安徽合肥230027
- 折叠
摘要
Abstract
A new approach is presented herein to predict the failure of metallic materials.A failure criterion that caters for the effects of stress triaxiality and Lode parameter is proposed and it is applicable not only to metals with ēf ＞ ef but also to metals with ēf ≤ ef,here ēf and ef are the two parameters defined as the true strains at stress triaxiality of η=1/3 for Lode parameters of ζ =1 (axisymmetric stress state) and ζ =0 (plane strain state) respectively.Furthermore,only two laboratory tests such as smooth bar tension test and pure shear test are needed to calibrate the failure criterion.The present failure criterion is proved in good agreement with the test data for various metals under different loading conditions.关键词
失效准则/金属材料/应力三轴度/Lode角参数/光滑圆杆拉伸试验/纯剪试验Key words
failure criterion/metallic material/stress triaxiality/Lode parameter/smooth bar tension test/pure shear test分类
数理科学引用本文复制引用
周琳,文鹤鸣..金属材料失效分析的新方法[J].高压物理学报,2019,33(1):90-99,10.
