铝型材挤压成形过程金属流动状态的数值模拟  

Numerical simulation analysis of metal flowing state on aluminum profile extrusion process

作　　者：王尧[1] 周照耀[1] 潘健怡[1] 刘亮[1] 吴苑标[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640

出　　处：《机械设计与制造》2010年第8期198-200,共3页Machinery Design & Manufacture

基　　金：2006年度广东省教育部产学研结合项目(2006D90304005);2008年粤港关键领域重点突破项目(2008Z007)

摘　　要：运用基于有限元法的模拟软件MSC.Marc对一复杂空心铝合金型材挤压过程进行数值模拟,在模拟过程中采用了一种既可以避免网格畸变和重划分,又能保证分析准确性的有限元模拟方法,研究了金属在模腔内的流动规律,利用出口质点轴向流速的SDV值定量的判定截面出口速度分布的均匀程度,揭示了金属的流动速度对产品形状及尺寸的影响,并将模拟仿真结果与试模结果进行比照分析,证明该方法可以成功地预测实际挤压过程中可能出现的潜在缺陷。Using MSC.Marc,based on the finite element method,numerical simulation on the extrusion process of the complicated hollow aluminum profile is presented.During simulation process,an element simulation method is used,which not only avoid mesh distortion and regeneration,but also assure analysis accuracy.By the results of simulation,the flowing law of metal in the die is researched,and making use of the SDV value of flowing velocity along axis direction of particles at the exit,the equilibrium of the material flow distribution at the exit is quantitatively judged,which reveals how flowing velocity of metal affects the shape and dimension of products.They are basically consistent with the producing test,which conforms that this method may successfully predict the potential defects occurring in the actual extrusion process.

关 键 词：铝型材 挤压 数值模拟 流动规律 

分 类 号：TH16[机械工程—机械制造及自动化] TG37[金属学及工艺—金属压力加工]