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Title:Analysis on drawing springback influencing factors for pure titanium hemispherical part
Authors: Gao Enzhi1  2  Chen Wenchao1 Li Zuocheng1 Kong Decheng1 
Unit: 1. College of Material Science and Engineering  Shenyang Aerospace University  2. Shenyang National Laboratory for Materials Science  Institute of Metal Research  Chinese Academy of Sciences 
KeyWords: TA0 hemispheric part deep drawing numerical simulation springback amount  friction coefficient 
ClassificationCode:TG365
year,vol(issue):pagenumber:2018,43(12):57-61
Abstract:

 For TA0 pure titanium sheet with 0.6 mm thickness, the finite element models of actual hemispheric part deep drawing and springback were established, and their drawing springback processes were numerically simulated. Then, the related test verifications were conducted, and the influences of process parameters on springback amount were investigated. The results show that the springback amount reduces with the increasing of friction coefficient, and the springback amount decreases obviously when the friction coefficient is less than 0.14. However, when the friction coefficient is larger than 0.14, the springback amount decreases smoothly. Furthermore, the springback amount reduces with the increasing of unit blank holder force, and the springback amount changes significantly when the unit blank holder force is less than 1.4 MPa. With the increasing of blank holder force, the springback amount decreases smoothly, and the springback amount increases with the increasing of clearance between punch and die. Finally, the actual drawing test is conducted on the basis of numerical simulation, the results of wall thickness test are basically consistent with the finite element simulation results, and the dimension after springback meets the size requirements of parts.

 
Funds:
基金项目:国家自然科学基金资助项目(51405310);辽宁省自然科学基金资助项目(201602554)
AuthorIntro:
作者简介:高恩志(1979-),男,博士,讲师 Email:ezhgao@imr.ac.cn
Reference:

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