Mechanical characteristics of deployable composite thin-walled lenticular tubes

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• 作者：Yu Hu^a ; ^{huyu1012@hotmail.com" class="auth_mail" title="E-mail the corresponding author} ; Wujun Chen^b ; ^{cwj@sjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Ruixiong Li^b ; Guangqiang Fang^c
• 关键词：Composite thin-walled lenticular tubes (CTLTs) ; Linear stiffness ; Stiffness ratios ; Axial compression experiments ; Buckling behavior ; Modal behavior ; Flattening and wrapping ; Flatness ratios
• 刊名：Composite Structures
• 出版年：2016
• 出版时间：1 October 2016
• 年：2016
• 卷：153
• 期：Complete
• 页码：601-613
• 全文大小：4407 K

文摘

In this paper, modal behaviors of composite thin-walled lenticular tubes (CTLTs) in free vibration and cantilever vibration are performed by comparing experimental with numerical outcome. Then, a linear and nonlinear buckling analysis of CTLTs subjected to axial compression are proposed to compare their numerical critical buckling loads with corresponding experimental results. The numerical method to simulate buckling behaviors of CTLTs under axial compressions is also verified. As the flattened and wrapped CTLTs need to be deployed completely in space engineering application, the flattening and wrapping process of CTLTs should be studied by using numerical simulation method due to complexity of composite materials. To explore the change rules of mechanical characteristics of CTLTs and facilitate design of CTLTs, the design parameters of CTLTs in vibration analysis, buckling analysis and flattening and wrapping process are all evaluated.