静水外压下纤维缠绕复合材料圆柱厚壳的稳定性研究  

Stability of thick filament winding composite cylindrical shells under hydrostatic pressure

作　　者：李永胜[1,2] 王纬波 姜旭[3] 于昌利 李泓运[1,2] LI Yong-sheng;WANG Wei-bo;JIANG Xu;YU Chang-li;LI Hong-yun(China Ship Scientific Research Center,Wuxi 214082,China;Taihu Laboratory of Deepsea Technological Science,Wuxi 214082,China;Harbin Institute of Technology(Weihai),Weihai 264209,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082 [2]深海技术科学太湖实验室,江苏无锡214082 [3]哈尔滨工业大学(威海),山东威海264209

出　　处：《船舶力学》2024年第9期1394-1404,共11页Journal of Ship Mechanics

基　　金：国家重点研发计划资助项目(2016YFC0304300)。

摘　　要：针对静水外压下纤维缠绕复合材料圆柱厚壳的临界屈曲载荷理论预报,本文基于Sander非线性壳体理论,结合圆柱壳变形几何方程以及纤维缠绕层的本构关系,推导出静水外压下纤维缠绕复合材料圆柱厚壳的屈曲控制方程;通过求解控制方程提出一种适用于静水外压下复合材料圆柱厚壳临界屈曲压力预报的解析方法;基于有限元模型对不同缠绕形式和缠绕角下的壳体临界屈曲压力进行对比计算,验证解析方法的准确性;基于解析方法,研究复合材料圆柱厚壳关键几何参数及材料设计对临界屈曲压力的影响。In order to predict the critical buckling load of a filament winding thick composite cylindrical shell under hydrostatic pressure,the buckling governing equation of the thick cylindrical shell under hydrostatic pressure was obtained based on the nonlinear Sander theory,as well as the deformation geometry equation of the cylindrical shell and the constitutive relation of the filament-wound layer.An analytical method for predicting the critical buckling pressure of thick composite cylindrical shells under hydrostatic pressure was proposed by solving the governing equation.Then,critical buckling load of the thick shell with different filament-wound types and angles were calculated with FEM and compared with analytical results for verifying the accuracy and high efficiency of the analytical method.The influence of key parameters such as geometrical and material design on the critical buckling load of thick cylindrical shells was investigated based on the analytical method.

关 键 词：纤维缠绕 圆柱耐压厚壳 临界屈曲载荷 解析方法 

分 类 号：O343[理学—固体力学]