内外压力作用下复合材料夹芯圆柱壳的屈曲及面芯分层扩展研究  

Investigation of buckling/wrinkling and face/core delamination propagation in a composite sandwich cylindrical shell subjected to interior and exterior pressure

作　　者：李泽成[1,2] 吴健 王纬波[1] LI Ze-cheng;WU Jian;WANG Wei-bo(National Key Laboratory on Ship Vibration and Noise,China Ship Scientific Research Center,Wuxi 214082, China;Jiangsu Key Laboratory of Green Ship Technology,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心船舶振动噪声重点实验室,江苏无锡214082 [2]江苏省绿色船舶重点实验室,江苏无锡214082

出　　处：《船舶力学》2018年第10期1233-1240,共8页Journal of Ship Mechanics

基　　金：工信部高技术船舶科研项目(工信部联装2016[546];2016[24];2016[548])

摘　　要：文章采用有限元方法数值模拟了内外等压载荷作用下复合材料夹芯圆柱壳的稳定性及面板和芯体之间的分层扩展行为。数值研究结果表明夹芯圆柱壳的屈曲临界力与芯体的弹性模量和泊松比、芯体和面板厚度之比、分层大小等因素密切相关,而且在内外等压作用下夹芯圆柱壳的面芯分层在结构失稳前不会发生扩展。文中研究所得结论对潜艇夹芯轻外壳结构设计具有一定的参考价值。A finite element numerical method was developed to investigate the buckling/wrinkling coupled face/core delamination crack propagation of a composite sandwich cylinder shell under interior and exterior equal pressure.By analyzing several examples,it is shown that the critical buckling load of the sandwich cylinder shell significantly depends on the Young’s modulus and Poisson’s ratio of core,the ratio of core’s thickness to that of face and the delamination size.Furthermore,the face/core delamination of sandwich cylinder shell does not further propagate until the structure buckling/wrinkling occurs under interior and exterior equal pressure.The results obtained in this work will be helpful and valuable to the design of sandwich outer shells of submarine.

关 键 词：夹芯 屈曲 分层扩展 

分 类 号：TB535.1[理学—物理]