基于等效设计波的船体结构疲劳强度许用应力法(英文)  

Permissible Stress Method for Fatigue Strength of Ship Hull Structure Based on EDW

作　　者：詹志鹄[1,2] 崔维成[1,3] 顾晔昕[2] 

机构地区：[1]上海交通大学船舶与海洋工程国家重点实验室,上海20030 [2]中国船级社审图中心,上海200135 [3]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2009年第6期923-933,共11页Journal of Ship Mechanics

摘　　要：文章总结了中国船级社疲劳强度评估方法中的许用应力范围方法。该方法用10种主要载荷控制参数下的等效设计波作为基本的计算载荷工况,通过基本计算载荷工况进行组合后求解疲劳应力范围。推导了疲劳许用应力范围计算公式和不同概率水平下疲劳应力的转换关系。对不同S-N曲线形式的许用应力范围进行了讨论,给出了中国船级社疲劳强度许用应力范围表格。用实例进行了验证。This paper summarize the permissible stress range method for fatigue strength analysis which was adopted in guidance of China Classification Society （CCS）. In this method, 10 equivalent design wave （EDW） state under the amplitude of dominant load parameter reaching to maximum is used as fundamental loading condition to calculate the fatigue stress,and the fatigue stress range can be calculated through the combination of fundamental loading condition.The permissible stress range formula and transfer factor of fatigue stress range were deduced.The values of permissible stress range were discussed corresponding to different S-N curves, and table of permissible stress range was given, this method was also checked by calculation on hatch comer of typical container vessel.

关 键 词：船体结构 疲劳强度 许用应力范围 等效设计波 

分 类 号：U661.4[交通运输工程—船舶及航道工程]