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Analysis Method for Springback of Thin-walled Structures Assembled by Spot Welding

Author: HanZhiGang
Tutor: LiuZuoSheng
School: Southwest Jiaotong University
Course: Engineering Mechanics
Keywords: Thin-walled structures Assembly Spot welding Rebound
CLC: TG404
Type: Master's thesis
Year: 2009
Downloads: 26
Quote: 0
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Abstract


The thin-walled structures spot welding assembly is very important to the manufacturing process of the auto body . The existence of a rebound phenomenon rather than the exact shape of the pre- stamping process manufacturing , assembly . After spot welding fixture corrected location of each component . Predict and control the welding fixture release , the the deformation coordination between the components , the the springback deformation amount is the important question of the assembly process . To the Ansys and Sysweld finite element software for tools , analysis of thin-walled structure welding fixture , to coordinate the release of components due to deformation caused by the local spot and pre- stamping rebound , springback deformation . The purpose is to establish a reasonable and feasible , release springback analysis method for spot welding assembly of thin-walled structures considering various important welding and structural factors . Welding software based Sysweld professional single solder joint welding process numerical simulation analysis ; basis for the single Sysweld solder joint analysis , Ansys finite element software , skirting a car ( no warping the deviations design model ) , for example , analysis the impact of of each solder local effect on the overall assembly springback deformation . Through the comparison of the measurement results of numerical simulation results with the actual rebound prove the local solder joint negligible effect on the amount of springback deformation of the overall model spot welding assembly generated . Based on the conclusions of this analysis , the initial stress analysis using Ansys finite element software , car skirting ( no warping the deviations design model ) due to the early the stamping rebound deviation of springback deformation of the whole assembly . Through the comparison of experimental data and simulation results , the validation the rebound analysis method of reliability , correctness .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Welding, metal cutting and metal bonding > Welding general issues > Stress and deformation of welded structures
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