管坯电磁胀形的松散耦合模型  

Loose Coupling Method of Electromagnetic Tube Bulging

作　　者：李忠[1] 王伟华[1] 张伟[1] 刘淑杰[1] 

机构地区：[1]哈尔滨理工大学荣成学院,山东荣成264300

出　　处：《装备制造技术》2015年第2期136-138,共3页Equipment Manufacturing Technology

基　　金：黑龙江省教育厅2012年科学技术研究项目资助(项目批准号)

摘　　要：介绍了电磁成形的松散耦合建模方法,包括了成形系统电磁场有限元分析模型各个分区的处理,边界条件的创建,结构场有限元模型单元类型的选择,本构关系的确定。通过有限元计算,给出电磁胀形时磁压力的分布趋势,管坯的应变分布趋势。指出管坯电磁胀形时,管坯、轴向应变和厚向应变的绝对值大致相等,管坯中部处于近平面应变状态。Modeling method of electromagnetic forming is introduced in this paper, including management of each division of electromagnetic field finite element analysis model for forming system, selection of element type for structural field and determination of constitutive equations. Magnetic pressure distribution trend and strain distribution trend on tube are presented by finite element calculation. Absolute value of axial strain and thickness direction strain are basically equal, tube center is in near plane strain state.

关 键 词：电磁成形 松散耦合 有限元模型 磁压力 平面应变状态 

分 类 号：TG391[金属学及工艺—金属压力加工]