Computational modeling of 3D powder compaction processes

被引：21
|
作者：
Khoei, A. R. [1 ]
Azami, A. R. [1 ]
Azizi, S. [1 ]
机构：
[1] Sharif Univ Technol, Dept Civil Engn, Tehran, Iran
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2007年 / 185卷 / 1-3期
关键词：
powder compaction; 3D simulation; FE model; plasticity theory; cap model;
D O I：
10.1016/j.jmatprotec.2006.03.122
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, the 3D numerical simulation of powder compaction processes is presented using a double-surface plasticity theory. A cone-cap plasticity model based on a combination of a convex yield surface consisting of a failure envelope and a hardening cap is developed for nonlinear behavior of powder materials in the concept of the generalized plasticity formulation. The constitutive elasto-plastic matrix and its components are derived based on the definition of yield surface, hardening parameter and nonlinear elastic behavior, as function of relative density of powder. A computational algorithm is presented from the viewpoint of efficient numerical modeling for the double-surface plasticity. The numerical simulation is illustrated in the modeling of 3D rotational-flanged, connecting-rod and shaped seal-disk components. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：166 / 172
页数：7
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