环件冷辗扩中残余应力的有限元研究  

Finite Element Research of Residual Stress 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,湖北武汉430056

出　　处：《热加工工艺》2009年第13期103-105,共3页Hot Working Technology

基　　金：武汉市青年科技晨光计划(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：环件冷辗扩中的残余应力对零件的精度会产生很大的影响。应用商业软件ABAQUS/Explicit,以深沟球轴承外套圈6308冷辗扩为例,建立起沟球截面环件冷辗扩的有限元计算模型。将在ABAQUS/Explicit中计算完毕的结果导入到ABAQUS/Standard中,编写了残余应力的求解程序。通过对比环件冷辗扩中6个不同阶段的残余应力计算结果,发现深沟球截面环件的残余应力随着变形量的增加而增大,整圆阶段有利于残余应力的下降,环件内部残余应力分布是不均匀的,而且数值在110～200MPa之间。The residual stress in cold ring rolling will cause great affect for the accuracy of ring parts. The commerce software ABAQUS/Explicit was used to build the FE model of cold rolling the groove ball section ring of 6308 bearing outer race. The ABAQUS/Explicit calculation result was imported to the ABAQUS/Standard, and a residual stress calculation program was made out. Through comparing the residual stress calculation result of six stages in cold ring rolling, it is found that the residual stress increases with the increase of deformation, the straight stage iss benefit to the decrease of residual stress, and the disribution of residual stress in ring part is uneven, the range is from 100 MPa to 200 MPa.

关 键 词：冷辗扩 残余应力 有限元 

分 类 号：TG331[金属学及工艺—金属压力加工]