【摘要】 文中以导管架海洋平台为例,利用ADINA有限元软件建立导管架海洋平台有限元模型并对其进行模态分析,提取海洋平台在复杂海洋环境下的振型和频率,与非耦合工况下的振型和频率进行对比。分析结果表明在考虑流-固耦合时,平台的自振频率有所减小,且对其动力响应有一定的影响。更多还原

【Abstract】 In various performance analysis of the platform,modal analysis is the foundation of other dynamic analysis.As example to offshore jacket platform,this paper using the finite element software ADINA to establish finite element model of offshore jacket platform and to analyse modal,extracting vibration modes and frequency of platform in the complex ocean environment,and comparing with the vibration mode and frequency in uncoupled condition.The analysis results show that the natural vibration frequency of platform is reduced and the other dynamic response has been effected in the fluid-solid interaction cases.更多还原