多向主动挤压成形过程的数值模拟及变形分区研究  

Research on Numerical Simulation of Multi-direction Active Extrusion Process and Deformation Division

作　　者：崔亚[1] 张治民[1] 于建民[2] 王强[2] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051 [2]镁基材料深加工教育部工程中心,山西太原030051

出　　处：《热加工工艺》2012年第13期85-87,92,共4页Hot Working Technology

基　　金：国家自然科学基金重点资助项目(50735005)

摘　　要：多向主动挤压过程中,应力状态复杂,金属的流动受多种因素的影响。应用三维有限元软件模拟了在多向同步挤压条件下,典型三通件的金属流动情况以及分流线的演变规律。并用成形过程中的典型应力图进行了应力分区,对各区的应力状态进行了分析。对比了该工艺与分步加载条件下的载荷-行程曲线,分析了成形力减小的原因。During the active extrusion process, the stress state is complex and the metal flow is affected by many factors. By Deform-3D finite element simulation software, it was simulated that metal flow of tee joint and the evolution of flow line in multi-direction synchronized extrusion conditions. Deformation division was obtained through the typical stress graph, The stress state of each division was analyzed. Compared the load-displacement curves, the reason of forming force decrease was analyzed.

关 键 词：多向主动挤压 变形分区 应力状态 数值模拟 

分 类 号：TG376[金属学及工艺—金属压力加工]