摘要
采用基于AZ31镁合金的本构方程与ALE算法的HyperXtrude软件,针对某一AZ31镁合金薄壁空心型材的挤压过程进行数值模拟,根据初始模具设计的不足,提出优化模具工作带长度和增设阻流坎两种优化设计方案。结果表明,优化方案有效地解决了初始模具设计中速度分布不均的问题;采用优化方案生产的型材截面上的温度分布和应力分布更加均匀;对于复杂薄壁空心型材,增设阻流坎比优化工作带长度更加适用。
The extrusion process of a hollow AZ31 magnesium alloy profile with the thin wall is simulated by using the constitutive model of AZ31 magnesium alloy and ALE algo-rithm based HyperXtrude software. Due to deficient design of the initial die, two design schemes （ optimization of the die bearing and introduction of the baffle plate） are proposed. The result shows that optimization schemes can solve the problem of non-uniform velocity distribution and can lead to uniform temperature and stress distribution in the cross-section of the profile. For the complex hollow magnesium alloy profiles with thin walls, introduction of the baffle plate is more suitable than optimization of the die bearing.
出处
《轻合金加工技术》
CAS
北大核心
2014年第10期40-45,共6页
Light Alloy Fabrication Technology
基金
镁合金板型材加工技术研究及产业化(2010AZ2001)
关键词
镁合金空心型材
数值模拟
阻流坎
AZ31镁合金
hollow magnesium alloy profile
numerical simulation
baffle plate
AZ31 magnesium alloy
