期刊
APPLIED MATHEMATICAL MODELLING
卷 37, 期 1-2, 页码 443-462出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2012.03.010
关键词
Powder die-pressing; 3D contact friction; Node-to-surface algorithm; Dynamic FEM; Cap plasticity; Large deformation
资金
- Iran National Science Foundation (INSF)
In this paper, a simple and efficient contact algorithm is presented for the evaluation of density distribution in three-dimensional dynamic modeling of powder compaction processes. The contact node-to-surface algorithm is employed to impose the contact constraints in large deformation frictional contact, and the contact frictional slip is modified by the Coulomb friction law to simulate the frictional behavior between the rigid punch and the work-piece. The 3D nonlinear contact friction algorithm is employed together with a double-surface cap plasticity model within the framework of large finite element deformation in order to predict the non-uniform relative density distribution during the dynamic simulation of powder die-pressing. The accuracy and robustness of contact algorithm is verified by the impact analysis of two elastic rods, which is compared with the analytical solution. Finally, the performance of computational schemes is illustrated in dynamic modeling of a set of powder components. (c) 2012 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据