Numerical simulation study on the mechanical properties and failure of laser spot welding joint

Zheng Bangzhi; Tian Xiaolin; Wang Zelong; Feng Zhaolong

doi:10.7513/j.issn.1004-7638.2024.01.024

Volume 45 Issue 1

Feb. 2024

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Zheng Bangzhi, Tian Xiaolin, Wang Zelong, Feng Zhaolong. Numerical simulation study on the mechanical properties and failure of laser spot welding joint[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 165-170. doi: 10.7513/j.issn.1004-7638.2024.01.024

Citation:

Zheng Bangzhi, Tian Xiaolin, Wang Zelong, Feng Zhaolong. Numerical simulation study on the mechanical properties and failure of laser spot welding joint[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 165-170. doi: 10.7513/j.issn.1004-7638.2024.01.024

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Numerical simulation study on the mechanical properties and failure of laser spot welding joint

doi: 10.7513/j.issn.1004-7638.2024.01.024

Zheng Bangzhi^{1, 2
,},
Tian Xiaolin^{1, 2},
Wang Zelong^{1, 2},
Feng Zhaolong^{1, 2}

1.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
2.
Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd., Chengdu 610300, Sichuan, China

Received Date: 2022-09-19
Publish Date: 2024-02-29

Abstract

Abstract

The static and dynamic mechanical properties of three kinds of laser welded joints under tensile, shearing and peeling conditions were tested, and the microstructure characteristics and hardness distribution of the spot welded joints were analyzed. The results show that the shape of solder joints is closely related to their mechanical properties, and the overall properties of C-type solder joints are better. The strength of solder joints is plastically strengthened by the increase in loading rate, and the greater the loading rate, the more obvious the plastic strengthening is. The overall distribution of welding seam is uniform and excessively smooth, while the hardness of fusion zone and heat affected zone is high. Based on the LS-DYNA failure criterion, the numerical simulation method of laser spot welding joint failure is studied, and the effectiveness of equivalent core diameter used to simulate laser spot welding failure is clarified.
- steel sheet for automobile,
- laser spot welding,
- mechanical properties,
- solder joint failure,
- numerical simulation

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References(9)

References

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