文献类型：期刊文献

英文题名：Prediction of Edge Crack in Cold Rolling of Silicon Steel Strip Based on an Extended Gurson-Tvergaard-Needleman Damage Model

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

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

年份：2015

卷号：137

期号：2

外文期刊名：JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME

收录：;EI(收录号：20164502993925);WOS:【SCI-EXPANDED(收录号:WOS:000352440900004)】；

基金：This work was financially supported by the Natural Science Foundation of China (Nos. 51105143, 51375164), the Fundamental Research Funds for the Central Universities (No. 1114036) and Shanghai University Young Teachers Training Funds (No. YG0142129).

语种：英文

外文关键词：Strip metal - Cold rolling - Fracture mechanics - Friction - Silicon steel - Cracks - Failure (mechanical)

摘要：Edge cracking is commonly observed in cold rolling process. However, its failure mechanism is far from fully understanding due to the complex stresses and plastic flow conditions of steel strip under the rolling condition. In this paper, an extended Gurson-Tvergaard-Needleman (GTN) damage model coupled with Nahshon-Hutchinson shear damage mechanism was introduced to investigate the damage and fracture behavior of steel strip in cold rolling. The results show that extended GTN damage model is efficient in predicting the occurrence of edge crack in cold rolling, and the prediction is more accurate than that of the original GTN damage model. The edge cracking behavior under various cold rolling process parameters is investigated. It comes to the conclusion that edge crack extension increases with the increase of the reduction ratio, tension and the decrease of the roller radius and friction coefficient. The influence of shear damage becomes more significant in rolling condition with a larger reduction ratio, smaller roller radius, lower friction force, and tension.