| Q345/SUS304异种钢焊接接头固有应变的变化规律研究 |
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| 引用本文： | 李元泰,吴华鑫,董斌,肖慎翀. Q345/SUS304异种钢焊接接头固有应变的变化规律研究[J]. 中国机械工程, 2021, 32(15): 1868-1873. DOI: 10.3969/j.issn.1004-132X.2021.15.013 |
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| 作者姓名： | 李元泰 吴华鑫 董斌 肖慎翀 |
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| 作者单位： | 武汉第二船舶设计研究所,武汉,430064 |
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| 基金项目： | 湖北省自然科学基金重点项目（2018CFA025） |
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| 摘 要： | 为快速准确地预测异种钢结构的焊接变形,提出了用于模拟异种钢焊接接头残余应力与变形的热弹塑性有限元法.基于所提方法,以Q345/SUS304异种钢平板对接接头和T型接头为研究对象,研究了其固有应变的变化规律.进一步针对复杂Q345/SUS304异种钢焊接结构,分别采用固有应变法和传统的热弹塑性有限元法进行焊接变形的预测和...
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| 关 键 词： | 异种钢焊接 有限元法 固有应变 焊接变形 |
Study on Variation Laws of Inherent Strain of Q345/SUS304Dissimilar Steel Welded Joints#br# |
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| LI Yuantai,WU Huaxin,DONG Bin,XIAO Shenchong. Study on Variation Laws of Inherent Strain of Q345/SUS304Dissimilar Steel Welded Joints#br#[J]. China Mechanical Engineering, 2021, 32(15): 1868-1873. DOI: 10.3969/j.issn.1004-132X.2021.15.013 |
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| Authors: | LI Yuantai WU Huaxin DONG Bin XIAO Shenchong |
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| Affiliation: | Wuhan Second Ship Design and ResearchInstitute,Wuhan,430064 |
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| Abstract: | 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. |
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| Keywords: | dissimilar steel welding finite element method inherent strain welding deformation |
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