Numerical Simulation of the Prestressed Laser Welding of 7075－T7451 Aluminum Alloy Sheet

Abstract:

The heat source model and the heat input model were built by analyzing welding process. The rationalities of model were verified by finite element simulation. The method of prestressed welding was employed in order to reduce welding residual stress. The welding residual stress would be widely impacted by imposed prestress of 90% yield strength welding. At the same time the propagation of welding heat cracking in the heat-affected zone was properly controlled by prestressed welding.

• Periodical: Key Engineering Materials (Volumes 431-432)
• Pages: 13-16
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.431-432.13
• Online since: March 2010
• Authors: Hong Feng Wang, Dun Wen Zuo, Hong Miao, Hong Jun Wang
• Keywords: Heat Cracking, Heat Input Model, Heat Source Model, Prestressed Welding, Residual Stress

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