由于单壳体水下航行器开孔加强结构受到外形限制，需采用非对称的围壁进行加强。本文采用数值分析方法，建立典型单壳体开孔非对称围壁加强结构有限元模型，开展仿真分析研究。通过调整非对称围壁高度，对比分析圆柱壳开孔孔边应力值，研究不同高度围壁对于孔边应力集中的影响，获得了非对称围壁加强结构的应力变化趋势，并与对称围壁加强结果进行对比，探究了适用于非对称围壁加强的设计方法，为以后工程设计提供技术支撑。
It is necessary the use asymmetric bulkhead for the strengthen the opening on the cylindrical hull. This paper presents the numerical analysis results using FEM method based on the FEM model of asymmetric bulkhead on cylindrical hull. During the simulation, the heights of asymmetric bulkhead on cylindrical hull were changed and the stresses of the opening on the cylindrical hull were studied. The variations of concentration of the stress for different heights of asymmetric bulkhead on cylindrical hull were investigated. The comparisons between symmetric and asymmetric bulkhead on cylindrical hull show that the proper design methods for asymmetric bulkhead on cylindrical hull could be helpful for future design with similar structures.
2020,42(2): 38-42 收稿日期：2019-05-28
DOI：10.3404/j.issn.1672-7649.2020.02.007
分类号：U663.1
作者简介：张帆晨(1994-),女,硕士研究生,研究方向为舰艇结构强度
参考文献：
[1] SANGEUI LEE. Ultimate strength of cylindrical shells with cutouts[J]. Ships and offshore structures, 2017, 12(S1):S153-S173
[2] TALEZADEHLARI A, RAHIMI G H. Investigating the effect of circular opening on axial buckling of unstiffened composite shell[J]. International Academic Journal of Science and Engineering, 2016, 3(5):116-125
[3] 朱邦俊, 王玉华. 开孔圆柱壳薄壳有限元分析[J]. 计算结构力学及其应用, 1984, 1(3):91-98
[4] 许兵. 切断一根肋骨的圆柱壳开孔应力分析[J]. 舰船科学技术, 2004, 22:13-17
[5] 施涛, 典型耐压船体开孔加强优化设计[D]. 武汉:华中科技大学, 2012
[6] 周猛猛, 杨宇华, 耿黎明, 等. 围壁补强的圆柱壳开孔结构有限元分析[J]. 船海工程, 2014, 43(2):4-6
[7] 舒斌, 胡义刚等. 大开孔圆柱壳极限载荷的有限元分析[J]. 船海工程, 2011, 40(2):14-16
[8] OBODAN, N. I, LEBEDEV, O. G. and GROMOV, V. A.:Nonlinear behavior and stability of thin-walled shells-Solid Mechanics and its applications[M], New York-London:Springer Dordrecht Heidelberg, 199, 2013.
[9] AvinashR. KHARAT, S. J. KADAM, S. G. BHOSALE. Study of different type reinforcement in cylindrical pressure vessel[J]. International Journal of Engineering Research & Technology ISSN:2278-0181. Vol. 2 Issue 10, October-2013.
[10] 张锦岚, 刘勇, 李铭. 加筋开孔结构强度分析[J]. 舰船科学技术, 2017, 39(1):12-16
