锥形件三维变薄旋压数值模拟  

Three-dimensional numerical simulation of power spinning for cone part

作　　者：郝继东[1] 刑照斌 秦升学[1,2] 吴凤玲 

机构地区：[1]山东科技大学机械电子工程学院,山东青岛266510 [2]山东小鸭模具有限公司,山东济南250101

出　　处：《锻压技术》2010年第3期80-83,共4页Forging & Stamping Technology

基　　金：山东省博士后创新基金资助项目(200803003)

摘　　要：基于ANSYS建立了锥形件变薄旋压三维有限元模型,模拟获得了旋压过程中应力应变的分布规律,分析了偏离率、旋轮进给速度对成形过程的影响,解释了旋压工件出现的裂纹、起皮等缺陷的原因,并给出了一些相应的解决措施。模拟结果表明,正偏离时的第一主应力通常大于负偏离和零偏离,容易导致工件开裂;工件外表面处等效应变大于内表面,在旋轮进给速率过大时容易导致工件起皮。The three-dimensional finite element model of the spinning process for cone parts was established based on ANSYS.The regularities of stress-strain distribution were obtained through the simulation.The influence of deviation and roller feed rate was analyzed.The reasons of defect,such as crack and peeling were explained and some measures were given.The results show that the maximum principal stress under positive deviation condition is usually larger than that under zero deviation and negative deviation conditions,and the workpiece cracks easily under positive deviation.The effective strain on the outer surface is larger than that on the inner surface,and the peeling of the workpiece appears easily when the roller feed rate is comparatively large.

关 键 词：有限元 旋压 旋压件缺陷 锥形件 

分 类 号：TG376[金属学及工艺—金属压力加工]