海底观测仪耐压壳体强度特性研究  

Research on Strength Characteristics of Seabed Observer Pressure Hull

作　　者：汪静[1] 王伟奇[1] 朱晓培[1] 黄兴 WANG Jing;WANG Weiqi;ZHU Xiaopei;HUANG Xing(Hubei Three Gorges Polytechnic,Yichang 443000,Hubei,China;Hubei Precise Ocean Detection Technology Co.,Ltd.,Yichang 443000,Hubei,China)

机构地区：[1]湖北三峡职业技术学院,湖北宜昌443000 [2]湖北中南鹏力海洋探测系统工程有限公司,湖北宜昌443000

出　　处：《机械科学与技术》2021年第3期377-381,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：宜昌市应用基础研究项目(A19-302-20);湖北省职业技术教育科学研究课题(ZJGB2019093)。

摘　　要：以1000 m水深某海底观测仪耐压壳体为研究对象,运用有限单元法,对比分析经典公式计算结果,分析经验公式的局限性;通过线性屈曲和非线性后屈曲分析得到不同长径比模型临界载荷的变化规律和极限强度以及后屈曲行为的变化特点;通过多工况的有限元计算分析,推导加筋圆柱壳的临界失稳载荷公式,最终得到重量减轻14.8%加筋圆柱壳结构。Taking the pressure hull of a seabed observer at 1000 m depth as the study object,this paper compared and analyzed the calculation results of classical formulas and the limitations of empirical formulas based on the finite element method.Through linear buckling and non-linear post-buckling analysis,the rule of critical bearing load,ultimate strength and post-buckling behavior characteristics of models with different aspect ratios can be obtained.Moreover,the critical instability load formula of stiffened cylindrical shells can be deduced through the finite element calculation and analysis under multiple working conditions,thus obtaining the stiffened cylindrical shell structure with 14.8%of weight reduction.

关 键 词：线性屈曲 非线性后屈曲 临界载荷 加筋圆柱壳 长径比 

分 类 号：TG156[金属学及工艺—热处理]