板架弯曲二次应力对纵骨疲劳评估影响的研究  

On the Effect of Secondary Bending Stresses to the Fatigue Evaluation of Longitudinal

作　　者：秦江璇[1] 任慧龙 王东海[2] 李旭[2] 张皓[1] 

机构地区：[1]哈尔滨工程大学船舶与海洋工程力学研究所,哈尔滨150001 [2]中国船级社,北京100007

出　　处：《船海工程》2014年第2期48-52,共5页Ship & Ocean Engineering

摘　　要：为了验证散货船、油船协调共同规范(HCSR)中在计算纵骨疲劳寿命时不考虑板架弯曲纵骨二次应力的合理性,讨论两种二次应力的计算方法,分别对散货船和油船板架的纵骨的二次应力进行计算,通过对是否考虑纵骨二次应力计算得到的疲劳寿命进行对比,验证HCSR中简化算法计算纵骨疲劳寿命的合理性。In order to verify rationality of calculating the longitudinal fatigue life without regard to longitudinal secondary stress in Common Structural Rules for Bulk Carriers and Oil Tankers （ HCSR） , tow kinds calculation methods of secondary stress were studied, and secondary stress of grillage longitudinal of Bulk carriers and Oil tankers were calculated .Considering whether secondary stress was taken into account in calculating the fatigue life of longitudinal , the simplified method of HCSR in calculat-ing the fatigue life of longitudinal was verified .

关 键 词：板架弯曲 二次应力 疲劳寿命 

分 类 号：U661.4[交通运输工程—船舶及航道工程]