摘要
通过对疲劳强度的评估方法及原理的梳理,并基于DNV开发的SESAM软件,对某潜水作业支持船月池角隅热点的疲劳强度进行评估和分析。根据三维势流理论求全船水动力载荷和总体响应,通过有限元方法计算出角隅疲劳热点应力响应,再基于S-N曲线的谱分析法和线性累积损伤理论计算热点疲劳损伤值,进而得到月池角隅处设计寿命。
The method and theory of fatigue assessment were introduced and utilized to analyze the hot spots of a deep diving support vessel in terms of its moon pool corners based on SESAM software developed by DNV.The three-dimension potential theory was used to obtain the hydrodynamic load and global response.The stress response of corner fatigue hot spot was calculated by FEA.Then,the fatigue damage of each hot spot was obtained based on SN-curve-based spectral method and the Miner’s accumulative theory.The design life of the moon pool corner was obtained accordingly.
作者
陈佳欣
李卫华
崔兵兵
王永成
CHEN Jia-xin;LI Wei-hua;CUI Bing-bing;WANG Yong-cheng(Shanghai Merchant Ship Design and Research Institute,Shanghai 201203,China)
出处
《船舶设计通讯》
2019年第1期47-54,共8页
Journal of Ship Design
关键词
深潜水作业支持船
月池角隅
谱疲劳
热点应力
SESAM
Deep Diving Support Vessel
moon pool corner
spectral-based fatigue
hot spot stress
SESAM software
