某散货轮尾部导流罩疲劳分析  

Fatigue Analysis of the Fluid Guide Sleeve on the Tail of a Cargo Ship

作　　者：熊铃华[1] 王璠[2] 张俊波[1] 

机构地区：[1]广州中国科学院工业技术研究院,广州510632 [2]暨南大学力学与土木程系,广州511458

出　　处：《西南大学学报（自然科学版）》2013年第11期180-183,共4页Journal of Southwest University(Natural Science Edition)

基　　金：教育部科学技术研究重点资助项目(106156);广州市超级计算应用研发与扶持专项(2012Y2-00039)

摘　　要：对某新型散货轮尾部螺旋桨导流罩进行了振动特性测试和有限元仿真,得到该罩自身及其与船体结构系统耦合振动的频谱.分析确定了可能因长期共振导致疲劳失效的部位,利用改进的名义应力法和累积损伤理论对该部位的振动响应和疲劳寿命进行了定量计算,最后对该导流罩的设计与安装提出了建议.Vibration testing and finite element simulation are made of the fluid guide sleeve of the propeller on the tail of a new cargo ship, and the coupling vibration frequency of the sleeve and the ship was ob- tained. Based on qualitative analysis, the position where fatigue failure is most likely to occur due to long- term resonance, is identified. The vibration response and fatigue life at this site are quantitatively calculated by means of the modified nominal stress method and cumulative damage theory. Finally, some sugges- tions about the design and installation of the sleeve are given in this paper.

关 键 词：导流罩 共振 疲劳寿命 

分 类 号：U467.497[机械工程—车辆工程] O326[交通运输工程—载运工具运用工程]