摘要
采用数值模拟和实验相结合的方法研究了AZ31镁合金板料分块压边力拉深矩形件的过程。首先设计了分块压边板,采用多点顶杆结构提供拉深所需的压边力,各个顶杆之间相互独立,可在板料不同的区域实现不同的压边力加载。然后对分块压边力拉深成型过程进行了数值模拟,研究不同板料区域动态压边力的分布规律以及板料流动性特点,通过实验验证了模拟所得规律。研究结果表明,模拟和实验具有良好的一致性,压边力的合理分布可使板料的流动更加均匀,有利于拉深性能的提升。
The deep drawing process of AZ31 magnesium alloy rectangular parts was researched by numerical simulation and experiments. The segment blank holder with a multi-pin system was first designed to load the blank-holder force(BHF) independently in different area of a sheet. Then the dynamic BHF varying with the position of the blank holder and the fluidity of the sheet were investigated by numerical simulation. Finally,the numerical simulation results were validated by some experiments. The results show that th...
出处
《热加工工艺》
CSCD
北大核心
2009年第1期76-80,共5页
Hot Working Technology
基金
科技部973计划资助项目(2007CB613703)
国家"十一五"科技支撑计划重点项目(2006BAE04B09)
上海市科委重大基础支持项目(06dj14005)
关键词
AZ31镁合金
矩形件
拉深成形
分块压边力
AZ31 magnesium alloy sheet
rectangular parts
deep drawing
segments Blank-holder Force
