铝合金连杆体闭塞锻造成形过程的数值模拟  

Numerical Simulation of the Closed Die Forging Process for Aluminum Alloy Connecting Rod

作　　者：伍太宾[1] 马斌[2] 张杰江[3] 

机构地区：[1]重庆文理学院新材料技术研究院 [2]重庆工商大学机械工程学院 [3]重庆理工大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2015年第9期991-995,共5页Special Casting & Nonferrous Alloys

基　　金：重庆市科技攻关计划资助项目(CSTC;2007AC3031);重庆市自然科学基金资助项目(CSTC;2005BB3159)

摘　　要：采用刚塑性有限元法,利用Deform-3D有限元软件对铝合金连杆体三向闭塞锻造成形过程进行了数值模拟。研究了在三向闭塞锻造成形过程中凸模的3种运动方式对铝合金连杆体成形过程中的等效应力、等效应变、金属流动速度矢量场以及变形载荷的影响。模拟结果表明,其凸模的运动方式采取上凹模和下凹模先合模,在上圆凸模、上方凸模向下运动的同时下圆凸模、下方凸模向上运动以后,侧凸模再沿着水平方向向左运动,连杆体内各部位的变形程度不大,金属流动较均匀,其成形件品质较好,锻件充填饱满,无成形缺陷存在,而且凸模的受力都不大,模具寿命较高。According to the three dimension closed die forging process of aluminum alloy connecting rod, the process was simulated numerically using Deform-3D rigid-plastic finite element software. Effects of three direction movement of punch on the effective stress field,effective strain field.velocity field of material,and forging load in the process were investigated. The simulation results reveal that the concave motion modes is beneficial for the heterogeneous flow of metal and the anti-deformation at different position of connecting rod. taking the satisfied quality and improving the service life of mould, where the forging parts exhibit fully filling with absence of forming defects .

关 键 词：铝合金连杆体 三向闭塞锻造 DEFORM-3D 数值模拟 凸模运动方式 

分 类 号：TG319[金属学及工艺—金属压力加工]