基于设计波法的半潜式生活平台主船体强度分析

Strength analysis of main hull of semi-submersible living platform based on design wave method

针对某半潜式生活平台,计算其主体结构强度并校核其是否符合规范要求。首先采用SESAM软件的Genie模块对半潜生活平台进行结构有限元、湿表面和水动力模型的建模,运用HydroD水动力模块计算了结构在不同周期和不同浪向下的幅值响应系数(RAO),通过RAO极值来确定设计波法中波浪的参数,将确定的设计波通过RAO极值来确定设计波法中波浪的参数,将确定的设计波通过载荷传递施加到模型上,采用Sestra求解器模块进行求解。最后采用Xtract模块进行应力结果后处理,计算结构的强度并校核其是否符合规范要求。结果表明,本文设计的半潜生活平台结构强度满足规范要求。本文研究方法和研究结论可为半潜式平台的强度计算提供有效参考且具有实际意义。

For a semi-submersible living platform,the structural strength of its main structure is calculated and checked whether it meets the requirements of the specification.Firstly,the Genie module of SESAM software is used to model the structural finite element,wet surface and hydrodynamic model of the semi-submersible life platform,and the HydroD hydrodynamic module is used to calculate the response amplitude operaters(RAO)of the structure in different cycles and different wave downwards,and the parameters of the wave in the design wave method are determined by the RAO extremum,and the determined design wave is applied to the model through load transfer.The Sestra solver module is used to solve the problem,and finally the Xtract module is used to post-process the stress results,calculate the strength of the structure,check whether it meets the specification requirements,and analyze the results.The design results show that the structural strength of the semi-submersible living platform designed in this paper meets the specification requirements.The research methods and conclusions of this paper can provide a valid reference for the strength calculation of semi-submersible platforms and have practical significance.