摘要
管节点是重力式海洋平台结构关键却薄弱的构件,海洋平台的失事很多也是由于构件疲劳造成的,因此对管节点进行合理的疲劳分析,可以有效地减少管节点的应力集中,增加节点疲劳寿命。以重力式潮流能发电装置试验海洋平台为例,采用三维SACS软件建立平台结构模型,依据现有设计资料,应用SACS软件对平台进行基于线弹性响应的静态加载条件下结构分析,并计算相应节点应力,根据S-N曲线计算在各种工况下平台的管节点的疲劳损伤,其目的是为重力式可升降海洋平台设计建造以及疲劳分析提供一些有益的参考。
The tubular joints are the most important and the weakest component of ocean platform. It has been found that tubular joints fatigue cracks are a dominating type of damage in ocean platform. So it is evident to study tubular joins fatigue behaviors to reduce stress concentration and improve fatigue lifetimes. Taking the gravity tidal current energy generation device test platform as an example, the construction of the model was built using SACS. Basing on the information received, the SACS software was applied to analyze the platform structure analysis based on linear elastic response under static loading conditions and to calculate the corresponding node stress. The fatigue damage of the component was calculated by S-N curve. The purpose is to provide some reference for building gravity tidal current energy generation device test platform and analysis of the fatigue for platform.
出处
《海洋技术》
北大核心
2012年第4期71-74,共4页
Ocean Technology
基金
波浪能
潮流能海上试验与测试场建设论证及工程设计(GHME2010ZC10)
关键词
重力式
潮流能发电装置
海洋平台
SACS
疲劳分析
gravity
tidal current energy generation device
offshore platform
SACS
fatigue analysis
