Numerical study on the effect of constraint duration on stress and deformation in SUS301L stainless-steel plates during laser welding

IF 2.5 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Welding in the World Pub Date : 2025-07-08 DOI:10.1007/s40194-025-02112-4

Liu Zuguo, Qin Xinmao, Liao Jianhua, Wu Jiazhu

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引用次数: 0

Abstract

The influence of external constraint time on the stress and deformation caused by laser welding of thin SUS301L stainless steel was quantitatively studied. Due to the inability to accurately control the fixture constraint time in the experiment, this paper uses a three-dimensional thermal elastoplastic finite element simulation method to study the deformation, stress, and strain changes of welded stainless steel plates under different fixture constraint times. In order to improve simulation accuracy, the relationship between mesh size and thermal input in finite element analysis is analyzed. The method of sequential coupling thermo-mechanic is proposed to analyze the transient temperature field and deformation during welding. The thermal and mechanical material properties used in the simulation follow a non-linear relationship as a function of temperature. Meanwhile, the accuracy of the simulation model was verified based on the temperature history by the K-type thermocouple and weld profile measured. The results show that the length of the clamp restraint time will indeed have a certain effect on the deformation after welding. Release of the clamp 25 s after the end of welding can effectively reduce the welding deformation from 1.3 to 1.21 mm, which is a 7% reduction.

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约束时间对SUS301L不锈钢板激光焊接应力和变形影响的数值研究

定量研究了外约束时间对SUS301L薄型不锈钢激光焊接应力和变形的影响。由于实验中无法精确控制夹具约束时间，本文采用三维热弹塑性有限元模拟方法研究焊接不锈钢板在不同夹具约束时间下的变形、应力和应变变化。为了提高仿真精度，分析了有限元分析中网格尺寸与热输入之间的关系。提出了顺序耦合热-力学方法来分析焊接过程中的瞬态温度场和变形。在模拟中使用的材料的热性能和力学性能遵循作为温度函数的非线性关系。同时，通过k型热电偶的温度历史和实测焊缝轮廓，验证了仿真模型的准确性。结果表明，夹紧约束时间的长短确实会对焊后变形产生一定的影响。焊接结束后25s松开夹钳，可有效地将焊接变形从1.3 mm减小到1.21 mm，减小幅度为7%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Welding in the World METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

4.20

自引率

14.30%

发文量

181

审稿时长

6-12 weeks

期刊介绍： The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.