1633B铝合金空心型材挤压过程的数值模拟及虚拟试模  

Numerical Simulation of Extrusion Process of 1633B Hollow Aluminum Profile and Virtual Extrusion

作　　者：林高用[1] 周佳[1] 张振峰[1] 郑小燕[1] 黄光法[1] 彭大暑[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083

出　　处：《上海交通大学学报》2008年第1期67-72,共6页Journal of Shanghai Jiaotong University

基　　金：云南省省院省校科技合作计划项目(2003UABAB05A050)

摘　　要：通过将有限元法与有限体积法相结合,在MSC.SuperForge商业软件上实现了挤压比λ=62.6的空心薄壁铝型材挤压过程的数值仿真,获得了该型材挤压过程的材料流动速度场、应力场、应变场、温度场分布图以及焊合过程.通过与生产试模结果的比较表明,基于数值分析的虚拟试模对挤压模具设计和挤压工艺的优化有直接指导意义.A new simulation system was developed by integrating finite element method（FEM） and finite volume method（FVM） based on the theories of large deformation elastic-plastic FEM and FVM, and the forming process of a complex hollow thin-walled aluminum profile 1633B of extrusion ratio λ= 62.6 was simulated in the new simulation system on the platform of MSC. SuperForge. The distributions of velocity field, effective stress field, effective strain field and temperature field, as well as the metal flowing during the extrusion process were obtained and analyzed. By comparing with producing test, the results of virtual extrusion based on numerical simulation are helpful to the design and optimization of extrusion die and process.

关 键 词：铝合金空心型材 大挤压比 有限元法 有限体积法 数值模拟 

分 类 号：TG376.2[金属学及工艺—金属压力加工]