Numerical Simulation Analysis on Optimization of Laser Welding Process for the Complex Structural Thin-walled Part Based on Visual-Environment

doi:10.3901/JME.2017.14.150

Abstract

Abstract: In order to shorten the test period, save the test cost and improve the test efficiency, based on the Visual-Environment software platform, the 3D Gaussian heat source model is used to simulate the laser welding process of the multi-weld complex structure thin-walled material. The number of joints for thin-walled components is up to 19, including butt and overlap joint. The topography of the joint is optimized by the combination of experiment and numerical simulation. On this basis, the welding sequence and constraint condition of the composite thin-walled parts are optimized by the thermal cycling curve method, and the optimal welding process is obtained. The results show that the temperature field cloud image can be obtained by using the 3D Gaussian heat source model and choosing the appropriate heat source parameters to obtain the same shape of the actual laser welding joint. The maximum deformation of the structural parts obtained by the optimized welding process is reduced from 3 mm to less than 0.5 mm, which satisfies the actual production demand.

Key words: complex structural thin-walled part, laser welding, numerical simulation analysis, process optimization

CLC Number:

TG456

LIU Jia, YANG Yudong, SHI Yan, ZHANG Hong, CHEN Xing. Numerical Simulation Analysis on Optimization of Laser Welding Process for the Complex Structural Thin-walled Part Based on Visual-Environment[J]. Journal of Mechanical Engineering, 2017, 53(14): 150-158.

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