| 船体总段对接焊缝结构疲劳寿命分析评估 |
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| 引用本文： | 罗瑞锋,唐文勇,宋友良.船体总段对接焊缝结构疲劳寿命分析评估[J].舰船科学技术,2009,31(6):27-30,41. |
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| 作者姓名： | 罗瑞锋 唐文勇 宋友良 |
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| 作者单位： | 1. 上海交通大学,海洋工程国家重点实验室,上海,200240
2. 中国船舶工业集团公司船舶工艺研究所,上海,200032 |
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| 摘 要： | 船体的分段模块化建造模式正逐渐成为现代造船的主流模式.为充分发挥这一造船模式的效率和优势,分段合拢中的对接形式也从以往的"阶梯式"开始往"一刀齐"方式转变.本文根据中国船级社的船体结构疲劳强度指南,基于热点应力S-N曲线法的疲劳累积损伤理论,对某舰船的总段对接焊缝进行了疲劳强度和疲劳寿命的计算分析.结果表明,该舰船在总段合拢中采用纵骨与板同一截面的对接形式,其结构的疲劳性能与传统的纵骨与板交错布置的对接形式相当.本文结论为在区域造船总段合拢中推广纵骨与板同一截面工艺提供了参考依据.
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| 关 键 词： | 对接焊缝 热点应力法 S-N曲线 疲劳强度 疲劳累积损伤度 |
Fatigue life assessment of naval block-assembly joint |
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| LUO Rui-feng,TANG Wen-yong,SONG You-liang.Fatigue life assessment of naval block-assembly joint[J].Ship Science and Technology,2009,31(6):27-30,41. |
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| Authors: | LUO Rui-feng TANG Wen-yong SONG You-liang |
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| Institution: | 1.State Key Laboratory of Ocean Engineering;Shanghai Jiaotong University;Shanghai 200240;China;2.Shipbuilding Technology Research Institute of CSSC;Shanghai 200032;China |
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| Abstract: | The ship modularization construction mode is gradually becoming popular.In order to exert the efficiency and advantages of this ship construction mode,the block section butts of prefabricated sections are gradually applied the "in-plane welded connection" instead of "step joint".According to guide for the fatigue assessment of ship structures of CCS,this paper discusses the fatigue strength of naval block-assembly joint based on fatigue accumulating damage concept of hot spot stress S-N curve method.The res... |
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| Keywords: | butt-welding line hot spot stress S-N curves fatigue strength fatigue accumulating damage |
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