大型散货船结构节点疲劳寿命的分析计算  

The Fatigue Life Assessment of Structural Node for Large Bulk Carrier

作　　者：杨文华[1] 韩继文[1] 汪庠宝[1] 叶彼得[2] 

机构地区：[1]上海交通大学 [2]江南造船集团有限责任公司

出　　处：《船舶工程》1998年第2期5-7,10,共4页Ship Engineering

摘　　要：根据应力幅长期分布的Weibull分布假设及结构材料疲劳的S-N曲线和线性累积损伤Miner准则，使用数值分析与解析相结合的混合法对34000DWT大湖型散货船结构进行了分析计算，结果令人满意，证实本文介绍的方法是解决船体结构在疲劳载荷作用下疲劳寿命估算的实用方法。Based on the Weibull distribution assumption of stress amplitude for long period,the S-N curve of structural material and miner criterion of linear accumulate damage ,a hybrid method which combines the numerical method and analytic method is introduced to estimate the fatigue life of ship structure under fatigue loading. An example for analyzing the structure of a 34,000 dwt lakes type bulk carrier is carried out,the result shows that this method is pratical and effective for ship structure fatigue analysis.

关 键 词：疲劳寿命 线性累积损伤 散货船 结构 S-N曲线 

分 类 号：U674.134[交通运输工程—船舶及航道工程]