Thermo-mechanical Coupled Finite Element Model for Whole Process of Friction Stir Welding
CUI Jun-hua1,2, KE Li-ming1,2, LIU Wen-long2, GUO Zheng-hua2, ZHAO Gang-yao2, FANG Ping2
1. Shaanxi Key Laboratory of Friction Welding Technologies, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
2. National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, China
Abstract：With ALE(Arbitrary Lagrangian-Eulerian) mesh adaptive technique and proper management of corresponding boundary conditions, thermo-mechanical coupled finite element model of whole process of friction stir welding (including under pressure stage and stable welding stages) was established. The model was tested by a 6061 aluminum alloy weldment. The results show that the highest temperature of the whole process temperature field is about 463℃, under its melting point. At 6s of stable welding stage, the plastic deformation field distribution on the cross section behind the tool looks like a V shape, the degree of deformation and the deformation region at the advancing side is more intensely and larger than that at the retreating side.
崔俊华, 柯黎明, 刘文龙, 郭正华, 赵刚要, 方平. 搅拌摩擦焊接全过程热力耦合有限元模型[J]. 材料工程, 2014, 0(12): 11-17.
CUI Jun-hua, KE Li-ming, LIU Wen-long, GUO Zheng-hua, ZHAO Gang-yao, FANG Ping. Thermo-mechanical Coupled Finite Element Model for Whole Process of Friction Stir Welding. Journal of Materials Engineering, 2014, 0(12): 11-17.
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