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Friction stir welding of dissimilar metals Finite Element Analysis

Author: MuYaoZuo
Tutor: LiuXiaoWen
School: Northwestern Polytechnical University
Course: Materials Processing Engineering
Keywords: FSW Temperature field Stress and strain fields Finite Element Analysis
CLC: TG453.9
Type: Master's thesis
Year: 2006
Downloads: 352
Quote: 2
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Abstract


Friction stir welding (FSW) temperature field, stress and strain fields of research, for the analysis of welding heat , thermal cycling process ; weld metal nuclei formation viscoplastic temperature , flow, expanded distribution ; welded joints mechanical metallurgical processes and welding stress and strain elastoplastic dynamic process ; and welded structures reliability and safety are all important . At present , domestic and foreign research focuses for FSW welding process, welding materials, joint microstructure and mechanical properties , friction stir mechanism , the new mixing head development , welding equipment and other aspects of development and industrialization . FSW process for the temperature distribution variation of stress and strain to study the literature is less . Based on the theoretical analysis of FSW process of heat production based on the mixing head dimensions established FSW dimensional finite element model of heat transfer . Using finite element analysis software ANSYS, combined with several measuring point temperature of the experimental data , by indirect coupled thermal analysis method to copper plate with brass FSW process was simulated . The results show that : 3mm thick T2 and H62 of the FSW heat of the welding line source , the simulation model can be further simplified as two-dimensional model ; welded in the middle period , the temperature distribution around the mixing head is basically reached a steady state ; etc. stress and equivalent strain and temperature changes in the same trend as the thickness direction of the stress and strain variations in different locations close to the same .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Welding, metal cutting and metal bonding > Welding process > Pressure welding > Other pressure welding
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