中文摘要：

粉末材料的组成的关系基于金属粉末是一种 elasto 塑料的材料的假设被导出，遵循一个椭圆的收益标准。组成的集成算法被讨论。在 elasto 塑料的转变舞台期间在每重复步解决橡皮火车增长的一个方法被提出。不同集成方法被用于有弹性、塑料的紧张。在模型参数和相对密度之间的关系通过实验被决定。模型是马克的实现的 intouser 子程序。与代码，为 balancer 的压缩过程的计算机模拟被执行。部分不是 axisymmetric 并且要求二个更低的穿孔机和一个上面的穿孔机形成。在哪个穿孔机的不同起始的位置被设置，二设计格的相对密度分布被获得并且比较。模拟结果在绿协议的密度分发上显示穿孔机位置和运动的影响。

英文摘要：

The constitutive relation of powder material was derived based on the assumption that metal powder is a kind of elasto-plastic material, complying with an elliptical yield criterion. The constitutive integration algorithm was discussed. A way to solve the elastic strain increment in each iteration step during elasto-pIastic transition stage was formulated. Different integration method was used for elastic and plastic strain. The relationship between model parameters and relative density was determined through experiments. The model was implemented into user-subroutines of Marc. With the code, computer simulations for compaction process ofa balancer were performed. The part is not axisymmetric and requires two lower punches and one upper punch to form. The relative density distributions of two design cases, in which different initial positions of the punches were set, were obtained and compared. The simulation results indicate the influence of punch position and movement on the density distribution of the green compacts.