深入研究7 000 m水深下球形耐压壳的力学特性及疲劳寿命。首先，对完整球形耐压壳进行强度及稳定性分析；其次在完整球形耐压壳的基础上，根据潜水器设计规范对其进行开孔加强设计；最后对开孔加强球形耐压球壳进行强度与稳定性以及疲劳寿命分析，并同时与完整球形耐压壳进行对比。研究结果表明，开孔对球形耐压壳影响较大，与完整球形耐压壳相比，强度下降了9.4%，稳定性下降了19%，疲劳寿命下降了32.4%。研究成果可为深海球形耐压壳开孔开窗设计提供参考。
In this paper, the mechanical properties and fatigue life of spherical pressure shell under 7000m depth are studied. Firstly, the strength and stability of the spherical pressure shell are analyzed. Secondly, based on the full spherical pressure shell, the openings is designed and strengthened according to the specification of the submersible design.Finally, the strength and stability and the fatigue life of the spherical shell with openings with renforment are analyzed. Calculation results show that the pressure spherical shell with opening with coaming reinforement compared with the spherical shell with no opening, the strength decreases by 9.4%, the stability decreases by 19% and the service life was reduced by 32.4%. The research results can provide reference for the design of deep sea spherical pressure shell with openings.
2017,39(3): 7-11 收稿日期：2016-08-25
DOI：10.3404/j.issn.1672-7619.2017.03.002
分类号：U661.4
作者简介：朱永梅(1969-),女,硕士,教授,研究方向为高等机械设计及机械可靠性设计
参考文献：
[1] 张建, 高杰, 王纬波, 等. 深海球形耐压壳力学特性研究[J]. 中国造船, 2015(4):129-140.ZHANG Jian, GAO Jie, WANG Wei-bo, et al. Investigation on mechanical properties of deep sea sPherical pressure hull[J]. Shipbuilding of China, 2015(4):129-140.
[2] 中国船级社. 潜水系统和潜水器入级与建造规范[S]. 北京:人民交通出版社, 1996.
[3] 王自力, 王仁华, 俞铭华, 等. 初始缺陷对不同深度载人潜水器耐压球壳极限承载力的影响[J]. 中国造船, 2007(2):45-50.
[4] 俞铭华, 王仁华, 王自力, 等. 深海载人潜水器有开孔耐压球壳的极限强度[J]. 中国造船, 2005(4):92-96.
[5] 张建, 王明禄, 王纬波, 等. 蛋形耐压壳力学特性研究[J]. 船舶力学, 2016(Z1):99-109.ZHANG Jian, WANG Ming-lu, WANG Wei-bo, et al. Research on mechanical properties of the eggshell-shaped pressure hull[J]. Ship Mechanics, 2016(Z1):99-109.
[6] PAN B B, CUI W C. An overview of buckling and ultimate strength of spherical pressure hull under external pressure[J]. Marine Structures, 2010, 23(3):227-240.
[7] WANG C M, WANG C Y, REDDY J N. Exact solutions for buckling of structural members[M]. CRC Press, 2004.
[8] TIMOSHENKO S P, GERE J M. Theory of elastic stability[M]. Dover Publications, 1961.
[9] 王文涛, 上官文斌, 段小成, 等. 基于线性疲劳累计损伤橡胶悬置疲劳寿命预测研究[J]. 机械工程学报, 2012(10):56-65.
[10] 高云凯, 徐成民, 方剑光. 车身台架疲劳试验程序载荷谱研究[J]. 机械工程学报, 2014(4):92-98.
[11] 周海波, 彭云飞, 吴鸿敏, 等. 圆柱壳变形计算方法研究[J]. 舰船科学技术, 2016, 38(5):1-4.ZHOU Hai-bo, PENG Yun-fei, WU Hong-min, et al. Research on calculation methods of cylindrical shell Deformation[J]. Ship Science and Technology, 2016, 38(5):1-4.
