Study on Variation Laws of Inherent Strain of Q345/SUS304 Dissimilar Steel Welded Joints

被引：3
|
作者：
Li Y. [1 ]
Wu H. [1 ]
Dong B. [1 ]
Xiao S. [1 ]
机构：
[1] Wuhan Second Ship Design and ResearchInstitute, Wuhan
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2021年 / 32卷 / 15期
关键词：
Dissimilar steel welding; Finite element method; Inherent strain; Welding deformation;
D O I：
10.3969/j.issn.1004-132X.2021.15.013
中图分类号：
学科分类号：
摘要：
In order to predict the welding deformation of dissimilar steel structures quickly and accurately, a thermo-elastic-plastic finite element method was developed to simulate the residual stress and deformation of dissimilar steel welded joints. Based on this method, the inherent strain of Q345/SUS304 dissimilar steel plate butt joints and T-joints was studied. Furthermore, for complex Q345/SUS304 dissimilar steel welded structures, the inherent strain method and the traditional thermo-elastic-plastic finite element method were used to predict and compare the welding deformations. The results show that with the increase of the heat input parameter Q/h2, the tendon forces and transverse shrinkages increase approximately linearly, and the relationship among them and Q/h2 is obtained, while the angular deformations increase first and then decrease, which reach the peak value around Q/h2=12 J/mm3. The laws may provide references for prediction and control of welding deformations of large dissimilar steel structures in engineering. © 2021, China Mechanical Engineering Magazine Office. All right reserved.
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页码：1868 / 1873
页数：5
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