蛋形深潜器耐压壳变厚度优化设计  

Optimal Design of Thickness of Egg-shaped Pressure Hulls of Deep Submersibles

作　　者：刘刚[1,2] 王祖华[3] 黄秉钧 刘少杰 黄一[1,2] LIU Gang;WANG Zuhua;HUANG Bingjun;LIU Shaojie;HUANG Yi(School of Naval Architecture,Dalian University of Technology Dalian 116024,China;State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China;Wuhan Second Ship Design and Research Institute,Wuhan 430064,China)

机构地区：[1]大连理工大学船舶工程学院,大连116024 [2]大连理工大学工业装备结构分析国家重点实验室,大连116024 [3]武汉第二船舶设计研究所,武汉430064

出　　处：《中国造船》2020年第4期32-42,共11页Shipbuilding of China

基　　金：国家自然科学基金面上项目(51879038);国防科技创新特区重点项目(19-H863-05-ZD-007-001-04)。

摘　　要：为了提高蛋形深潜器耐压壳的材料利用率及安全性,对蛋形耐压壳的厚度进行了优化设计。首先,建立了等厚度蛋形耐压壳有限元计算模型,分析了耐压壳的应力分布特征;然后,采用零阶优化方法在保持结构重量及容积不变的条件下改变耐压壳的厚度,并给出了优化后的耐压壳内外表面曲线拟合方程用于实际耐压壳的优化设计;最后,对比分析了蛋形耐压壳结构优化前后的最大应力值、应力分布以及屈曲强度,验证了优化后的耐压壳结构具有更好的安全性。该方法可为深潜器耐压壳结构的优化设计提供参考。In order to improve the material utilization rate and safety of the egg-shaped pressure hull,the thickness of the egg-shaped pressure hull is optimized in this paper.Finite element models of the egg-shaped pressure hulls with constant thickness are generated to analyze the stress distribution of the pressure hulls.Then,the zero-order optimization method is used to change the thickness of the pressure hull under the condition of keeping the weight and volume of the structure unchanged.Fitting equations of the interior and exterior profile surface of the optimized pressure hulls are also proposed for the optimal design of the real egg-shaped pressure hulls.The maximum stress value,stress distribution,and buckling strength of the egg-shaped pressure shell structure before and after optimization are compared and analyzed,which verifies that the optimized pressure shell structure has better safety.

关 键 词：深潜器 蛋形耐压壳 变厚度 优化设计 屈曲强度 

分 类 号：U674.941[交通运输工程—船舶及航道工程] U661.4[交通运输工程—船舶与海洋工程]