Numerical Study on the Effectiveness of Fixture and Pre-Strain for Reduction of Welding Distortion

Lin Jie Zhang; Jian Xun Zhang; Wei Liang; Hisashi Serizawa; Hidekazu Murakawa

doi:10.4028/www.scientific.net/MSF.580-582.401

Paper Titles

Grades 92 and 23: Weldability Assessment and Long-Term Performances for Power Generation Applications
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Mechanical and Microstructural Properties of Dissimilar Friction Spot Welded Aluminum Alloy
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Hybrid Friction Stir Welding of Carbon Steel
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Remote Resistance Welding of Zr-4 Endplate for DUPIC Fuel Fabrication
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Numerical Study on the Effectiveness of Fixture and Pre-Strain for Reduction of Welding Distortion
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Linear Friction Welding of Ti-6Al-4V Alloy: Microstructure Characterization
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Liquid Penetration Induced Cracking in Mg-Alloy Spot Welds
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The Failure Strength Evaluation on Resistance Welding Mixed Adhesive Bonding
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Residual Stress Relief and Redistribution of Welded Metals by Vibratory Stress Relaxation
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Numerical Study on the Effectiveness of Fixture and Pre-Strain for Reduction of Welding Distortion

Abstract:

An in-house developed FE code, based on the idea of Iterative Substructure Method, was used to evaluate the effectiveness of fixture and pre-strain for reduction of welding distortion in a fillet welded structure. Comparison between the simulation results and experimental results has been performed to validate the basic FE model. Effects of two fixture conditions and various prestrain schemes were analyzed. The simulation results show that appropriate fixture can greatly reduce angular distortion of the work-piece and results in an appreciable reduction in residual deformation and the application of pre-strain can significantly reduce the residual distortion.