基于数值模拟的小应变差筒形件旋压成形方法研究  

Study on spinning methods of cylinders with small strain difference based on numerical simulation

作　　者：曾超[1] 夏琴香[1] 肖刚锋[1] 谢红希[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《锻压技术》2014年第4期36-41,共6页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51075153);广东省自然科学基金资助项目(10151040301000000)

摘　　要：为了获得变形均匀的筒形件,提出采用有限元数值模拟方法对错距旋压、等距旋压和对轮旋压三种强力旋压成形工艺方案进行分析,介绍了三种强力旋压成形工艺方法及其原理,并制定了相应的成形工艺方案。以20钢筒形件为研究对象,采用MSC.MARC有限元软件,对三种不同的强力旋压成形过程进行了数值模拟。结果表明,旋压成形后工件的内外表面存在一定的应力及应变差;采用对轮旋压所获得筒形件内外表面应力应变差远小于错距旋压及等距旋压,采用等距旋压成形时筒形件内外表面应力应变差最大。To obtain the uniformly deformed cylinders, three kinds of power spinning methods, such as the stagger spinning, isometric spinning and counter-roller spinning were analyzed based on the finite element numerical simulation. The principles of three kinds of power spinning methods were introduced and the corresponding technology programs were designed according to their different characteristics. Taken the 20 steel cylinders as the researching object, the processes of three kinds of spinning methods were simulated by the finite element analysis software MSC. MARC. The results show that the distributions of equivalent stress and equivalent strain are non - uniform between the inner and outer surfaces of the spun workpieee ; the differences of stress and strain obtained by the counter - roller spinning are far less than that of the stagger spinning and isometric spinning, and the differences of stress and strain obtained by the isometric spinning are the maximum.

关 键 词：错距旋压 等距旋压 对轮旋压 筒形件 应力应变 

分 类 号：TG306[金属学及工艺—金属压力加工]