压力容器2016，Vol.33Issue(11)：39-44,63,7.DOI:10.3969/j.issn.1001-4837.2016.11.007
基于97.6%存活率船用LNG燃料罐疲劳累积损伤度计算
Calculation of Fatigue Cumulative Damage about Marine LNG Fuel Tank based on 97 . 6% Survival Rate
马寒阳 1朱星榜 1董金善1
作者信息
- 1. 南京工业大学 机械与动力工程学院,江苏 南京 211816
- 折叠
摘要
Abstract
According to Guidelines for Fatigue Strength of Ship Structure of CCS,the calculation process based on simplified algorithm of LNG fuel tank was presented in this dissertation. The formula of S-N curve equation which introduced the survival index was derived. Eight load levels were given based on 97. 6% survival rate ( not less than 108 wave encounters) ,20 stress hot spots were selected. The fatigue cu-mulative damage of the fuel tank was computed by considering a variety sailing conditions and filling con-ditions. The fatigue cumulative damage of the saddle of fuel tank was 0. 2734 when the fuel tank is placed horizontally on ship,and the fatigue cumulative damage of the saddle was 0. 5825 when the fuel tank is placed lengthwise on ship. It would reduce the probability of fatigue failure of the fuel tank when the fuel tank is placed horizontally on ship.关键词
存活率/疲劳累积损伤度/LNG燃料罐Key words
survival rate/fatigue cumulative damage/LNG fuel tank分类
机械制造引用本文复制引用
马寒阳,朱星榜,董金善..基于97.6%存活率船用LNG燃料罐疲劳累积损伤度计算[J].压力容器,2016,33(11):39-44,63,7.
