【作者】 谢永和； 李俊来；

【Author】 Xie Yong-he,Li Jun-lai (School of Naval Architchcture and Civil Engineering Zhejiang Ocean University Zhoushan 316004)

【机构】 浙江海洋学院船舶与建筑工程学院；

【摘要】 疲劳失效是船舶结构的主要破坏模式之一。本文以某沥青船为例,给出建立有限元模型的基本要求,建立沥青船货舱结构的有限元模型,并考虑温度应力场影响,在6种典型工况作用下,选取货舱结构疲劳计算的热点,利用有限元软件对沥青船进行热点应力分析。然后,依照IACS船体共同规范,进行热点疲劳累积损伤计算及结构疲劳评估。结果表明该船结构满足疲劳强度要求,为运载高温液货的沥青船结构设计提供了重要的设计参考。更多还原

【Abstract】 Fatigue failure is one of the main damage pattern to ship structure.The cargo component of a tasphalt carrier is studied in the present paper.Firstly,the finite element model is built,taking into account the impact of temperature stress field. Secondly,six load cases of the tasphalt carrier are analyzed respectively.Thirdly,four hot points of the cargo component are selected.In the end,the fatique assessment are carried out according to CSR.The results show that the main hull members meet the request of fatigue strength.This assessment method can provide important reference for the design of tasphalt carrie.更多还原