焊接热输入对残余应力影响的盲孔法测试与数值分析

doi:10.3969/j.issn.1674-0696.2018.05.02

重庆交通大学学报（自然科学版） ›› 2018, Vol. 37 ›› Issue (05): 7-11.DOI: 10.3969/j.issn.1674-0696.2018.05.02

焊接热输入对残余应力影响的盲孔法测试与数值分析

何雄君1, 宋渊1 ,肖祥1, 王进军2

(1.武汉理工大学交通学院，湖北武汉 430063；2.中交二航局六公司，湖北武汉 430014)

收稿日期:2017-03-02 修回日期:2017-08-19 出版日期:2018-05-15 发布日期:2018-05-15
作者简介:何雄君(1966—)，男，湖北蕲春人，教授，博士生导师，主要从事桥梁结构耐久性设计与安全评估方面的研究。E-mail： hxj@mail.whut.edu.cn。
基金资助:
国家自然科学基金项目(51178361)

Blind Hole Method Test and Numerical Analysis of Influence of Welding Heat Input on Residual Stress

HE Xiongjun1, SONG Yuan1, XIAO Xiang1, WANG Jinjun2

(1.School of Transportation, Wuhan University of Technology, Wuhan 430063, Hubei, P. R. China; 2. CCCC Second Harbor Engineering Co. Ltd. No.6 Branch, Wuhan 430014, Hubei, P. R. China)

Received:2017-03-02 Revised:2017-08-19 Online:2018-05-15 Published:2018-05-15

摘要/Abstract

摘要： 为了分析T型构件多道焊焊接残余应力与焊接热输入间的关系，运用有限元分析软件ANSYS对该焊接工艺进行数值模拟；运用盲孔法检测焊接残余应力，并与数值模拟结果进行对比；基于原有的焊接工艺，对3组焊接热输入值下T型构件多道焊进行数值模拟，分析了焊接热输入值对焊接残余应力的影响规律。研究结果表明：数值模拟结果与实测结果相近；焊接热输入增大，纵向焊接残余应力会增大，横向残余应力会减小。

关键词: 桥梁工程, T型构件, 多道焊, 焊接热输入, 焊接残余应力

Abstract: In order to analyze the relationship between welding residual stress and heat input of multi-pass welding of T-shaped structure, the finite element analysis software ANSYS was used to numerically simulate its welding process. First of all, blind hole method was used to detect welding residual stress, and the numerical simulation results were compared. Then, based on original welding process, numerical simulation of multi-pass welding of T-shaped structure was carried out for 3 groups of welding heat input values. Finally, the influence discipline of welding heat input valued on welding residual stress was analyzed. The research results show that numerical simulation results are close to the measured results; the welding heat input increases and the longitudinal welding residual stress will increase, however, the horizontal welding residual stress will decrease.

Key words: bridge engineering, T-shaped structure, multi-pass welding, welding heat input, welding residual stress

中图分类号:

何雄君1, 宋渊1 ,肖祥1, 王进军2. 焊接热输入对残余应力影响的盲孔法测试与数值分析[J]. 重庆交通大学学报（自然科学版）, 2018, 37(05): 7-11.

HE Xiongjun1, SONG Yuan1, XIAO Xiang1, WANG Jinjun2. Blind Hole Method Test and Numerical Analysis of Influence of Welding Heat Input on Residual Stress[J]. Journal of Chongqing Jiaotong University(Natural Science), 2018, 37(05): 7-11.

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焊接热输入对残余应力影响的盲孔法测试与数值分析

Blind Hole Method Test and Numerical Analysis of Influence of Welding Heat Input on Residual Stress

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