文献类型：期刊文献

英文题名：Analysis of edge crack behavior of steel sheet in multi-pass cold rolling based on a shear modified GTN damage model

作者：Sun, Quan;Zan, Daqian;Chen, Jianjun[1];Pan, Hongliang

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China

年份：2015

卷号：80

起止页码：259

外文期刊名：THEORETICAL AND APPLIED FRACTURE MECHANICS

收录：;EI(收录号：20153101100298);WOS:【SCI-EXPANDED(收录号:WOS:000366340200015)】；

基金：This work was financially supported by the Natural Science Foundation of China (51105143, 51375164), the Fundamental Research Funds for the Central Universities (1114036) and Shanghai University Young Teachers Training Funds (YG0142129).

语种：英文

外文关键词：Cold rolling; Edge crack; Silicon steel; GTN model; Shear damage

摘要：Edge cracks are commonly observed in steel strip in cold rolling, which may cause deterioration of quality and productivity of products. The edge defect is one of the important factors that lead to edge cracks in cold rolling. In this paper, the GTN damage model coupled with shear damage mechanism proposed by Nahshon and Hutchinson (2008) was employed to analyze the ductile damage and failure behavior of steel sheet with edge defects under multi-pass cold rolling. Cold rolling experiments of silicon steel with edge notches were performed on an experimental rolling mill to verify the accuracy of the numerical results. The simulation results show that two cracks appeared in the notch tip after five passes rolling and extended toward the direction with an angle around 45 and 135 to the rolling direction, which was in good agreement with the experimental data. The influences of notch shape and size on the onset of cracks around the notch tip are investigated and some significant conclusions are drawn. (C) 2015 Elsevier Ltd. All rights reserved.