碳纤维增强树脂复合材料螺旋加强金属柱壳屈曲特性  

Buckling of metallic cylindrical shells stiffened with helical carbon fiber reinforced polymer stripes

作　　者：左新龙 唐文献[3] ZUO Xinlong;TANG Wenxian(School of Information Technology,Jiangsu Open University,Nanjing 210000,China;Jiangsu Marine Machinery Equipment Advanced Manufacturing Laboratory,Jiangsu University of Science and Technology,Zhenjiang 212003,China;School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]江苏开放大学信息工程学院,南京210000 [2]江苏科技大学江苏省船海机械装备先进制造实验室,镇江212003 [3]江苏科技大学机械工程学院,镇江212003

出　　处：《复合材料学报》2024年第6期3279-3289,共11页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(52171258)。

摘　　要：为开展碳纤维增强树脂复合材料螺旋加强金属柱壳屈曲特性理论研究,建立了复合材料螺旋加强金属柱壳的复材层局部包裹面积比与厚度比数学关系,推导了金属内衬复材螺旋缠绕多层耐压壳抗压极限载荷理论模型。其次,开展了线性屈曲及非线性屈曲分析,并与试验结果对比分析。最后,根据推导的理论模型,形成了该类型全尺寸柱壳适用水深图谱。结果表明:插值法分析中数值分析与理论计算值的误差随复合材料包裹面积比增加而减小,最大误差为5.2%,最小误差为0.9%;试验模型中理论计算与数值分析、试验结果误差分别为3.20%、3.46%,三者具有良好一致性;内衬金属层厚度一定时,螺旋包裹适当复合材料带可适应水深范围较广,该应用对水下管路原位加强、深水管再利用等方面提供新思路。Buckling of metallic cylindrical shells stiffened with helical composite stripes was investigated in the current study.A mathematical relationship between area ratio and thickness ratio of composite layer for externally pressurized metallic cylinder stiffened with helical composite stripes was proposed.An analytical formula for collapse load of such hybrid structure was derived.Numerical analysis and experimental verification were conducted.Furthermore,depth chart for full-scale hybrid cylinder was designed using analytical formulae.The results indicate that the maximum and minimum difference between numerical and theoretical results obtained using interpolation method are 5.2%and 0.9%,respectively.The theoretical,numerical and experimental data for samples agree favorably.The difference between theoretical and numerical results is 3.20%.The difference between theoretical and experimental results is 3.46%.Metallic cylindrical shells stiffened with multiple helical composite stripes is satisfy for a wide range of depths.Composite stripe stiffeners have vast potential for application in installed and reusable tubes.

关 键 词：碳纤维增强树脂复合材料 柱壳 屈曲理论模型 有限元 螺旋肋 

分 类 号：U674.941[交通运输工程—船舶及航道工程] TB333[交通运输工程—船舶与海洋工程]