实体保持架等温挤压成形中损伤的数值模拟  

Numerical Simulation on Damage in Isothermal Extrusion of Solid Cage

作　　者：赵亮宇[1] 郭俊卿[1,2] 李冰[1] 郭俊磊[1] 汪庆瑞[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471003

出　　处：《轴承》2010年第6期35-37,58,共4页Bearing

基　　金：河南省科技攻关项目(0624260035);河南科技大学SRTP资助项目(2008004)

摘　　要：针对铜合金轴承实体保持架等温挤压成形中易出现裂纹的问题,通过UG建立成形模具数字模型,根据Freudenthal损伤准则,利用DEFORM-3D软件对铅黄铜轴承保持架在不同挤压温度、成形时间条件下的损伤分布和损伤源位置进行了模拟与分析,并对模具结构进行了优化,降低了保持架梁根部、棱边处的损伤程度,为保持架挤压成形工艺及模具设计提供了依据。Aimed at that cracks would appear easily in isothermal extrusion of solid cage,the extrusion model is achieved by UG software and Freudenthal formula is used as damage criterion.The distribution and source of the damage in deformation is explored by DEFORM-3D at different forming temperature and time.The mould structure is optimized based on simulation results.The damage in the bottom and the end land of the cage bars is decreased.This gave scientific grounds to forming process and mould design for the cage.

关 键 词：滚动轴承 实体保持架 等温挤压 损伤 结构优化 

分 类 号：TH133.33[机械工程—机械制造及自动化] TG376.2[金属学及工艺—金属压力加工]