Numerical Simulation Of The Working Condition Of Warm Compaction P/M Die

At present, in the powder metallurgy profession the overall technical level is not high and the craft equipment is backward in our country. It has a bigger disparity compared with the advanced technical level overseas. So to research thoroughly and develop vigorously the low cost and low investment warm compaction powder metallurgy production technology in our country, is very important for enhancing the scale and the technical level of the powder metallurgy product, promoting the development of the powder metallurgy industry and reducing the disparity with the overseas. The mold is an important tool for the powder forming and sizing. Therefore, as the further research of "powder metallurgy mold CAD/CAM system" for examing the validity and rationality of the mold design, to study the mold working condition in the warm powder compaction with the computer and numerical simulation, will have more theory and practical significance.In this article it analies the distortion behavior of the warm compaction powder in detail: elastic deformation→plastic deformation→disruption. Then it determines and establishes the elastic-plastic mechanics model in the warm compaction process, and analies how to use the finite element to solve the elastic-plastic question of the warm compaction powder. This article uses the finite element analysis software ANSYS to carry on the simulation about the mold working condition in the warm powder compaction. Finally it confirmes the below conclusions:(1) The horizontal pressure also increases while the compact density is increasing from the result, and the die where is approaching the upper spot of compact receives the biggest stress.(2) The size distribution of the frictional stress in every region on the die cavity is different. The another result it obtains is the frictional stress situation that the die receives. The die cavity which is approaching the demi-section middle spot of the compact receives the biggest frictional stress, and the frictional stress reduces from this spot to the beginnings and ends . The die cavity receives the lowest friction force in the most lower extremity.After analyzing the horizontal pressure and frictional stress of the die cavity and comparising the simulation result with the actual production, the article finally suggests the mold design and manufacture in actual.Moreover, this article has also researched the connection between the developed "powder metallurgy mold CAD/CAM system" and the ANSYS. It provides Data automatic transmission for this system and the ANSYS, and it solves the friendly integration between the design and the analysis data. Finally, this article edits the source program and realizes the mold parameter design in the simulation process using ANSYS parameter design language APDL.