船体总纵弯曲时计及多种应力组合的累积损伤简化计算方法  

Simplified calculation for accumulated combined stress-induced damage to hull during overall longitudinal bending of ship

作　　者：葛菲[1] 戴仰山[1] 张海彬[1] 戴愚志 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2003年第2期123-127,共5页Journal of Harbin Engineering University

摘　　要：为计算船体总纵弯曲时纵向构件在多种应力成份组合下的疲劳损伤,提出了基于等效规则波概念的简化计算方法.以线性波浪载荷为例,按严格方法和简化方法计算某舰船疲劳累积损伤,对所得结果进行的对比说明了该简化方法的可用性和简便性,这为该简化方法在船体纵向构件疲劳强度计算中的实际应用提供了可能.A simplified way of calculation based on the concept of equivalent regular wave was proposed for calculation of the combined stressinduced damage to the longitudinal structures during overal longitudinal bending of ship.The comparison made with the results of accumulated fatigue damage under linear waveindaced loads calculated by the proposed method and the conventional method shows the applicability of the proposed method.This makes the calculation of fatigue strength for longitudinal structures of ship hull possible.

关 键 词：等效规则波 等效应力范围 简化方法 线性波浪载荷 多种应力成份组合 疲劳累积损伤 

分 类 号：U661.43[交通运输工程—船舶及航道工程]