Numerical Simulation and Process Optimization of Laser Welding in 6056 Aluminum Alloy T-Joints

This paper conducts a numerical simulation of the laser welding process for 6056 aluminum alloy stringers and skin T-joints using Simufact Welding. Initially, the accuracy of the finite element simulation is validated, followed by an exploration of the impact of bilateral asynchronous and bilateral...

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Bibliographic Details
Published in:Crystals (Basel) 2025-01, Vol.15 (1), p.35
Main Authors: Peng, Jin, Xie, Shihua, Chen, Tiejun, Wang, Xingxing, Yu, Xiaokai, Yang, Luqiang, Ni, Zenglei, Ling, Zicheng, Yuan, Zhipeng, Shi, Jianjun, Yang, Zhibin
Format: Article
Language:English
Subjects:
6056 aluminum alloy
Alloying elements
Alloys
Aluminum alloys
Aluminum base alloys
Computer simulation
Deformation analysis
Equivalence
Heat conductivity
High speed rail
Laser beam welding
laser welding
Lasers
Mathematical analysis
Melt pools
numerical simulation
optimized process parameters
Process parameters
Residual stress
Sequences
Simulation
Skin
Software
Stability
Stress analysis
Stringers
T-joint
Tee joints
Welding parameters
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Summary:This paper conducts a numerical simulation of the laser welding process for 6056 aluminum alloy stringers and skin T-joints using Simufact Welding. Initially, the accuracy of the finite element simulation is validated, followed by an exploration of the impact of bilateral asynchronous and bilateral synchronous laser welding on molten pool stability. Process parameters, including laser power, welding speed, fixture clamping force, and preheat temperature, are optimized through orthogonal testing. Furthermore, the influence of welding sequences on post-weld equivalent stress and deformation in three stringers’ T-joints is analyzed. The numerical simulation results indicate that the stability of the molten pool is superior in bilateral synchronous welding compared to asynchronous welding. Optimized process parameters were obtained through orthogonal testing, and subsequent experiments demonstrated that the welding sequence of welding both sides first, followed by the middle, produced lower post-weld equivalent stress and reduced overall joint deformation.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst15010035