多蛋形交接耐压壳屈曲特性试验与数值研究  

Experimental and numerical study on buckling of the multi-segment egg-shaped pressure hull

作　　者：左新龙 唐文献[1,2] 张建[1,3] 王纬波[3] 王月阳 吴文伟[3] ZUO Xin-long;TANG Wen-xian;ZHANG Jian;WANG Wei-bo;WANG Yue-yang;WU Wen-wei(Jiangsu University of Science and Technology,Zhenjiang 212003,China;China ShipScientific Research Center,Wuxi 214082,China;Jiangsu Provincial Key Laboratory ofAdvanced Manufacturing for Marine Mechanical Equipment,Jiangsu University of Scienceand Technology,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学,江苏镇江212003 [2]江苏科技大学江苏省船海机械装备先进制造重点实验室,江苏镇江212003 [3]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2019年第4期430-438,共9页Journal of Ship Mechanics

基　　金：江苏省基础研究计划(自然科学基金)青年基金项目(BK20150469);江苏省研究生科研创新计划项目(KYLX16_995)

摘　　要：文章研究了多蛋形交接耐压壳屈曲行为。基于壳体开孔处的变形量与完整壳体一致的设计理念,优选多蛋壳结构参数,制作多蛋壳比例模型,并对其制作误差进行了检测。此外,还进行了静水压力试验,验证真实多蛋壳破坏形式,检验环肋参数的合理性,比较了考虑真实形状和厚度的非线性有限元分析结果。结果表明:基于变形协调理念设计的多蛋壳,最终破坏远离环肋交接处,蛋形壳单元破坏形式及载荷与完整单蛋壳基本相同,试验验证了多蛋壳继承了完整蛋形壳较好的耐压特性;基于弧长法的数值计算与试验结果具有良好一致性,考虑真实形状和厚度的非线性有限元分析可用于分析预测真实壳体的屈曲特性。The experiment was conducted to investigate buckling behaviors of the multi-segment egg-shaped pressure hull.Optimal scale models were made according to the principle of equal displacement at the rib ring between segment and single egg-shaped pressure hull,and manufacture error of scale models was detected.And,for investigating the collapse behavior of multi-segment egg-shaped hulls loaded with external pressure,and testifying the rationality for structure parameters of rib-ring,hydrostatic test was conducted.The results show that the collapse of multi-segment egg-shaped pressure shell was far away from the rib-ring,which verified that multi-segment egg-shaped hull inherits breakdown characteristics of the single egg-shaped hull.Moreover,the nonlinear numerical analysis with arc-length method was based on deterministic imperfections obtained from measured geometric shapes and elastic-plastic modeling of true stress-strain curves,which agreed well with experimental one and could be used to predict buckling be haviors of hulls.

关 键 词：耐压壳 蛋形壳 屈曲 静水压力试验 有限元分析 

分 类 号：TE58[石油与天然气工程—油气田开发工程] U661.4[交通运输工程—船舶及航道工程]