Influence of Punch Shape on the Fracture Surface Quality of Hydropiercing Holes
Tao Yang1, Jing Hao2, Gang Liu1, Hai-Bo Su3, Xin-Ping Chen3, Yan-Bing Qi4
(1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;2. Xi′an Space Engine Factory, Xi'an 710100, China; 3.Baoshan Iron ＆ Steel Co., Ltd, Shanghai 201900, China;4.FAW-Volkswagen Automotive Co., Ltd, Changchun 130011, China)
Abstract:
Three different punches are designed for the hydropiercing experiments and finite element simulations are conducted by finite element program ABAQUS-3D to investigate the influence of punch shape on the fracture surface quality of hydropiercing holes. The results show the fracture burrs are not obvious punched by all the three punches. The collapse punched by the round punch is a little larger than the others. The fracture surface quality punched by the round punch is good with larger smooth zone and the interface between smooth zone and tear zone is even with large gradient. The size of the smooth zone is larger and the interface between smooth zone and tear zone is uneven with large gradient punched by the flat punch. The size of the smooth zone is smaller and the size of the tear zone increases from the first fractured to the last fractured punched by the inclined punch.
Key words: hydropiercing hydroforming fracture surface quality finite element simulation
DOI：10.11916/j.issn.1005-9113.2014.03.012
Clc Number:TG394
Fund:
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Influence of Punch Shape on the Fracture Surface Quality of Hydropiercing Holes
本站小编 哈尔滨工业大学/2019-10-23
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