FEM simulation for cold press forging forming of the roundfin heat sink
In this paper,the finite element method is used to investigate the forming process of cold press forging for the round-fin heat sink in the automotive lighting.A series of simulations on the round-fin heat sink forming using the program DEFORM were carried out.The blank thickness and friction coefficient on the formation of round-fin were studied,and the tooling structure with counterpressure on the heat sink formation was also investigated.The results show that the blank thickness is very good for the round-fin formation,and the thicker the blank is,the better the round-fin can be formed; and also When both the punch-blank interface and the die-blank interface have the same value of friction factor,the larger value of friction factor is in favor of round-fin forming,the further investigation reveals that the friction at the punch-blank interface has more significant effect on preventing the initiation of flow-through compared with the friction at the die-blank interface,which implies that the punch-blank interface has more significant effect on the material flow in the formation of round-fin.Meanwhile,The tooling structure with counterpressure is helpful to the formation of round-fin heat sink,which not only ensures the height of each round-fin on the heat sink is uniform but also retards the initiation of flow-through on the reverse side of round-fin.In addition,the experiments of press forging process were conducted to validate the finite element analysis,and the simulation results are in good agreement with the experimental data.
Round-fin,Cold Press Forging Finite Element Method
Kesheng Wang Yu Han Haiyan Zhang Lihan Zhang
School of Mechanics,Ningbo University of Technology,Ningbo 315016,China
国际会议
沈阳
英文
857-862
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）