环件冷辗扩中材料的本构关系  

Material Constitutive Relations in Cold Ring Rolling

作　　者：左治江[1] 李尧[1] 

机构地区：[1]江汉大学机电与建筑工程学院,武汉430056

出　　处：《轴承》2009年第4期25-27,59,共4页Bearing

基　　金：武汉市青年晨光计划(200850731365);湖北省教育厅科学技术研究计划优秀中青年人才项目(Q20083402)

摘　　要：对弹塑性材料拉伸试验进行假设,选取能够符合冷辗扩本构特征的兰伯-奥斯古简化模型,根据拉伸试验国家标准,对4组冷辗扩用轴承钢GCr15作拉伸试验,基于拉伸试验结果,采用数值拟合的方法得到了适合于环件冷辗扩弹塑性有限元计算的本构方程。Making some hypothesis for tension test, the Ramberg - Osgood simplifying model was selected for matching constitutive character of cold ring rolling. According to national standard, four groups of samples made from bearing steel GCr15 were tested. Based on the result, the constitutive equation matching for elastic -plastic finite element calculation of cold ring rolling was obtained by numerical fitting.

关 键 词：环件 冷辗扩 弹塑性 GCR15 本构方程 

分 类 号：TG331[金属学及工艺—金属压力加工]