| FPSO典型焊接接头在疲劳载荷下的残余应力释放数值模拟 |
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| 引用本文： | 李良碧.FPSO典型焊接接头在疲劳载荷下的残余应力释放数值模拟[J].江苏科技大学学报(社会科学版),2009,23(1):5-8. |
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| 作者姓名： | 李良碧 |
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| 作者单位： | 江苏科技大学,船舶与海洋工程学院,江苏,镇江,212003;中国船舶科学研究中心,江苏,无锡,214082
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| 基金项目： | 江苏省高校自然科学基金 |
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| 摘 要： | 为了保证FPSO典型焊接结构的安全可靠性，较准确地预测残余应力在疲劳载荷下的释放状况，采用了三维弹塑性有限元方法．首先分析了在有预载荷情况下，FPSO典型焊接接头的残余应力释放大小，并用试验数据进行验证，然后分析了该结构在疲劳载荷下的残余应力释放行为．计算结果表明，残余应力释放是与初始残余应力和外载荷的大小密切相关的．
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| 关 键 词： | 残余应力释放 焊接接头 有限元 疲劳 FPSO |
Numerical simulation of residual stress relaxation in typical weld joint of FPSO under fatigue loading |
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| Li Liangbi.Numerical simulation of residual stress relaxation in typical weld joint of FPSO under fatigue loading[J].Journal of Jiangsu University of Science and Technology:Natural Science Edition,2009,23(1):5-8. |
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| Authors: | Li Liangbi |
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| Institution: | 1.School of Naval Architecture and Ocean Engineering;Jiangsu University of Science and Technology;Zhenjiang Jiangsu 212003;China;2.China Ship Scientific Research Center;Wuxi Jiangsu 214082;China |
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| Abstract: | In order to assure the safety and reliability of a typical weld joint of FPSO(Floating Production Storage and Offloading),it is an important research project to predict residual stress relaxation under fatigue loading.In this paper,first,a typical welded connection of FPSO is investigated with 3-D elastic-plastic finite element analysis;moreover,it is validated with experimental data.Afterwards,residual stresses relaxation of the structure under fatigue loading is studied.Results show that the residual stre... |
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| Keywords: | FPSO |
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