| 焊接初始缺陷对船体梁极限弯矩的影响 |
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| 引用本文： | 冯国庆,周海仲,任慧龙,李晓宇.焊接初始缺陷对船体梁极限弯矩的影响[J].船舶工程,2011,33(2):67-70. |
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| 作者姓名： | 冯国庆 周海仲 任慧龙 李晓宇 |
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| 作者单位： | 哈尔滨工程大学船舶与海洋工程力学研究所,哈尔滨市,150001;哈尔滨工程大学船舶与海洋工程力学研究所,哈尔滨市,150001;哈尔滨工程大学船舶与海洋工程力学研究所,哈尔滨市,150001;哈尔滨工程大学船舶与海洋工程力学研究所,哈尔滨市,150001 |
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| 摘 要： | 对焊接初始缺陷于船体梁极限弯矩的影响进行了研究.采用热传递分析得到焊接结构的温度场,进而采用热弹塑性分析得到结构的焊接残余应力和焊接变形.将得到的焊接变形及残余应力作为结构的初始缺陷,对船体梁的极限弯矩进行了比较计算.结果表明,焊接初始缺陷对船体梁极限弯矩的影响不宜忽略,热传递及热弹塑性分析的方法可较好地模拟船体梁极限弯矩分析中的焊接初始缺陷.
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| 关 键 词： | 焊接 初始缺陷 极限弯矩 船体梁 |
Influences of Initial Imperfection Due to Welding on the Ultimate Bending Moment of Ship Hull Girder |
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| FENG Guo-qing,ZHOU Hai-zhong,REN Hui-long,LI Xiao-yu.Influences of Initial Imperfection Due to Welding on the Ultimate Bending Moment of Ship Hull Girder[J].Ship Engineering,2011,33(2):67-70. |
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| Authors: | FENG Guo-qing ZHOU Hai-zhong REN Hui-long LI Xiao-yu |
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| Institution: | FENG Guo-qing,ZHOU Hai-zhong,REN Hui-long,LI Xiao-yu (Institute of Naval Architecture and Ocean Engineering Mechanics,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | The influence of initial imperfections due to welding on the ultimate bending moment of ship hull girder is studied.First,the temperature field of the welding structures is calculated by using the heat transfer analysis,then the residual stress and distortion induced by welding is obtained by adopting the thermo-elastic-plastic analysis.Further,analysis of the ultimate bending moment of ship hull girder is performed with the welding induced residual stress and distortion as the initial imperfections.The stu... |
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| Keywords: | welding initial imperfection ultimate bending moment ship hull girder |
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