| 厚钢板对接焊缝残余应力的数值模拟 |
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| 引用本文： | 林升,杨娜.厚钢板对接焊缝残余应力的数值模拟[J].北方交通大学学报,2014(1):107-111,116. |
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| 作者姓名： | 林升 杨娜 |
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| 作者单位： | 北京交通大学土木建筑工程学院,北京100044;南宁中海宏洋房地产有限公司广西南宁530029 |
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| 基金项目： | 国家自然科学基金资助项目（51078026、50938008）;新世纪优秀人才支持计划资助项目（NCET-11-0571）;中央高校基本科研业务费专项资金资助（2012JBM007） |
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| 摘 要： | 基于ABAQUS及其子程序DFLUX,采用热力间接耦合法,对不同厚度尺寸的Q345B厚钢板的对接焊缝进行了三维模拟分析,得到了焊接的温度场分布和最终焊接残余应力分布.结果表明：构件表面焊接残余应力大于中间面;表面纵向和横向残余应力都有一定的规律;对接焊缝沿纵向焊接残余应力随着板厚度的增加而增加,这种增加的趋势对厚度小于70 mm的钢板很明显,对70～80 mm的钢板不明显;而横向残余应力随钢板厚度的增加变化不显著.
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| 关 键 词： | 焊接 厚钢板 残余应力 对接焊缝 数值模拟 |
Numerical simulation of residual stresses on butt-weld of thick steel plate |
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| LIN ShengSchool of Civil Engineering,Beijing Jiaotong University,Beijing,China;China Overseas Grand Oceans Property CO.,Ltd.Nanning,Nanning Guangxi,China YANG Na.Numerical simulation of residual stresses on butt-weld of thick steel plate[J].Journal of Northern Jiaotong University,2014(1):107-111,116. |
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| Authors: | LIN ShengSchool of Civil Engineering Beijing Jiaotong University Beijing China;China Overseas Grand Oceans Property CO LtdNanning Nanning Guangxi China YANG Na |
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| Institution: | LIN Sheng(School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;China Overseas Grand Oceans Property CO.,Ltd.(Nanning), Nanning Guangxi 530029, China) YANG Na(School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China) |
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| Abstract: | Based on the ABAQUS code and its user subroutine DFLUX,this paper does 3D numerical simulation of butt weld of Q345B thick steel plate with different thickness by using the uncoupled thermal-mechanical method,and gets the distribution of welding temperature and residual stresses.The numerical simulation results show that the longitudinal and transverse residual stress is regular,and the residual stress on the surface is bigger than the middle one.The welding longitudinal residual stress increases with plate thickness,especially when the plate thickness is less than 70 mm.And the transverse stress is not sensitive to thickness. |
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| Keywords: | welding thick steel plate residual stress butt weld numerical simulation |
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