RESEARCH AND SIMULATION OF THE INFLUENCE OF THREE-AXIAL COMPACTION ON POWDER METALLURGIC PRODUCT PROPERTIES
来源期刊：Acta Metallurgica Sinica2008年第2期
论文作者：Y.C. Wu D.G. Wang Y.G. Yin M.H. Jiao J.W. Yu T. Xie
Key words：Density; FEM; Property; Three-axial compaction;
Abstract: The warm powder compaction process is simulated by the finite element analysis software, MSC/MARC. The thermal mechanically coupled analysis method is applied on the basis of the updated Lagrangian Method, to simulate the warm powder compaction process. The warm powder compaction process is simulated, and the influence of friction condition and pressing styles are researched on the density of powder green and the mechanics behavior at certain temperature. The results indicate that for cylindrical compacts, with the improvement of the friction condition, the uniformity of distribution of green relative density is largely improved, the pressing force and stress decrease, and the nonconforming pressing processes influence the distribution of green density to some degree. The status of stress distribution of the process that punches firstly press and die finally press is different from the other three processes, and presents the figure of 'flume'.
Y.C. Wu1，D.G. Wang1，Y.G. Yin2，M.H. Jiao2，J.W. Yu2，T. Xie2
(1.School of Material and Engineering, Hefei University of Technology, Hefei 230009, China;
2.Institute of Tribology, Hefei University of Technology, Hefei 230009, China)
Abstract:The warm powder compaction process is simulated by the finite element analysis software, MSC/MARC. The thermal mechanically coupled analysis method is applied on the basis of the updated Lagrangian Method, to simulate the warm powder compaction process. The warm powder compaction process is simulated, and the influence of friction condition and pressing styles are researched on the density of powder green and the mechanics behavior at certain temperature. The results indicate that for cylindrical compacts, with the improvement of the friction condition, the uniformity of distribution of green relative density is largely improved, the pressing force and stress decrease, and the nonconforming pressing processes influence the distribution of green density to some degree. The status of stress distribution of the process that punches firstly press and die finally press is different from the other three processes, and presents the figure of ''flume''.
Key words:Density; FEM; Property; Three-axial compaction;
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