【摘要】 大深度载人潜水器往往采用开孔耐压球壳作为其主要的承压结构,球壳开孔加强结构的优化设计,对减轻球壳重量,提高球壳承载能力具有重要意义。本文介绍拓扑优化的方法以及耐压球壳优化设计的基本流程,以4 500 m耐压球壳为研究对象,基于Hyperworks和Workbench软件,建立了耐压球壳的有限元模型,进行静力分析,并根据结果对球壳的开孔加强结构进行拓扑优化和尺寸优化,得到最优的加强形式。优化结果表明,优化后的耐压球壳的刚度和承载能力得到显著提高。更多还原

【Abstract】 Deep manned submersibles often use open-hole pressure spherical shells as their main pressure-bearing structures. It is of great significance to optimize the reinforced structure of the opening of the spherical shell to reduce the weight of the spherical shell and improve the bearing capacity of the spherical shell.This paper introduces the method of topology optimization and the basic optimization process of the pressure spherical shell. Then the paper takes the 4500 m pressure spherical shell as the research object.Based on the Ansys Workbench and Hyperworks software, a finite element model of the open-hole spherical shell was built, then the static analysis was conducted.And according to the analysis results, the topology optimization and size optimization were performed. Finally, the optimal reinforcement structure of spherical shell was got.The optimization results show that the stiffness and bearing capacity of the spherical shell has been significantly improved.更多还原