全海深载人潜水器厚观察窗结构的强度研究  

Strength Analysis of Thick Conical Window for Full Ocean Deep Manned Submersible

作　　者：杜青海 高睿 崔维成[1,3] DU Qinghai;GAO Rui;CUI Weicheng(Hadal Science and Technology Research Center (Shanghai Engineering Research Center of Hadal Science and Technology),Ocean Science College of Shanghai Ocean University,Shanghai 201306,China;College of Engineering Science and Technology,Shanghai Ocean University,Shanghai 201306,China;Westlake University,Hangzhou 310024,China)

机构地区：[1]上海深渊科学工程技术研究中心,上海海洋大学海洋科学学院,上海201306 [2]上海海洋大学工程学院,上海201306 [3]西湖大学工学院,杭州310024

出　　处：《中国造船》2019年第2期1-12,共12页Shipbuilding of China

摘　　要：全海深载人潜水器是当前海洋技术领域最有挑战性的深海装备之一,而锥台型观察窗的设计是全海深载人潜水器的技术难点.为了研究锥台型观察窗的结构参数和倒角对于应力和位移的影响,首先利用ABAQUS对文献记述的试验进行仿真,验证有限元模型的可靠性.然后建立带有两种边界条件的有限元模型,对比分析位移和应力的差异.最后研究锥角α、厚度直径比t/Di、摩擦系数μ和倒角对锥台型观察窗的位移和应力的影响.数值分析结果表明:有限元仿真数据比文献试验数据稍大,偏保守;自由边界时的轴向位移比固定边界时的大,更符合实际工程应用;3个设计参数与应力和位移均成反比,给出了锥角和厚度直径比的合理优化区间;在锥台型观察窗内侧面边缘处建立倒角有利于减小应力集中.Full ocean deep(FOD) manned submersible is one of the most challenging deep sea equipment in the field of marine technology. There is technical difficulty in design of the frustum type of observation window for the FOD manned submersible. The software ABAQUS is used to verify the experiments in the literature,and the reliability of the finite element method has been proved. Then a finite element model with two different boundary conditions is established and difference of the solutions to displacement and stress is compared and analyzed. Effects of parameters such as cone angle α, ratio of thickness to diameter t/Di,friction coefficient μ and the chamfer on the displacement and stress of the conical window are studied. It is shown that the data of the finite element simulation are slightly larger and more conservative than the experimental results. Axial displacement of the free boundary is larger than that of the fixed boundary, which is more accord with the real action. The three design parameters are inversely proportional to the stress and displacement, and a reasonable optimal interval between the cone angle and the ratio of the thickness to the diameter is obtained. Establishment of the chamfer at the inner side edge of the conical window is beneficial to reduce stress concentration.

关 键 词：HOV 锥台型观察窗 有限元分析 接触 

分 类 号：P715.5[天文地球—海洋科学]