小水线面双体船结构疲劳评估方法研究  

Methods for fatigue assessment of SWATH structures

作　　者：甄春博 冯国庆 任慧龙 李陈峰 

机构地区：[1]哈尔滨工程大学多体船技术国防重点学科实验室,黑龙江哈尔滨150001

出　　处：《华中科技大学学报（自然科学版）》2012年第4期96-99,109,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50809019)

摘　　要：针对小水线面双体船的结构疲劳问题,建立某小水线面双体船的全船有限元模型,并分别采用中国船级社给出的简化方法和谱分析法对典型结构细节进行疲劳强度评估.结果表明:小水线面双体船的支柱结构的疲劳问题较为突出,简化方法可以忽略迎浪和斜浪对累积损伤的贡献;谱分析方法可考虑实际海况下的疲劳寿命,相比于简化方法更加合理.The fatigue strength assessment of small waterplane area twin hull ship （SWATH） was studied. A global finite element model of a SWATH was built. The simplified procedures by China Classification Society and the spectral analysis method were adopted to make the fatigue strength assessment of the typical structural details of the SWATH. The results show that the struts is liable to be damaged by the fatigue process; the cumulative damage from the head sea and oblique sea can be neglected in the simplified procedures; and the spectral fatigue analysis is more reasonable than the simplified procedures for the actual scatter diagram of the ship encountered can be taken into account in the spectral fatigue analysis.

关 键 词：小水线面双体船 疲劳强度 有限元 简化方法 谱分析法 累积损伤 

分 类 号：U661.4[交通运输工程—船舶及航道工程]