Numerical Simulation of Compacting Process of a Multi-stepped Part with Comparison to Experiments
Numerical Simulation of Compacting Process of a Multi-stepped Part with Comparison to Experiments
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多台阶零件压实过程数值模拟及实验对比
DOI：
10.2497/jjspm.46.696
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
R. Charlier
中科院分区：
文献类型：
--
作者：
P. Mosbah;S. Shima;A. Habraken;R. Charlier
根据铁粉的实验数据和基于修正的CaM-Clay模型的本构方程，对轴对称多台阶零件进行了数值模拟。在本文的第一部分中，详细讨论了本构关系。在第二部分中，对多台阶零件的压制过程进行了模拟。由此讨论了在压缩过程中产生的现象：压缩过程中，块从下冲头上升，而在压缩结束时，块中存在缺陷。在本文的第三部分，将数值模拟结果与实验结果进行了比较，结果表明，施加在刀具上的力与实验值在同一范围内。
From experimental data for an iron powder and constitutive equations based on the modified Cam-Clay model, simulation of an axi-symmetric multi-stepped part has been achieved. In the first part of this paper, details of the constitutive relation are discussed. In the second part, the simulation of a compaction process for a multi-stepped part has been carried out. The phenomena arising along the compaction are thereby discussed: the piece rise from the lower punch during the compression and defects in the piece at the end of the compression. In the third part of this paper, results of numerical simulation are compared with experiments and it is shown that the forces exerted on the tools are in the same range of the experimental ones.