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Effects of a flexible joint on instability of a free-free jointed bipartite beam under the follower and transversal forces

Effects of a flexible joint on instability of a free-free jointed bipartite beam under the follower and transversal forces
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摘要 这篇论文作为二阶段的太空结构的现实主义的模拟在追随者和横过的力量下面处理一根免费免费的灵活连接由两部组成的横梁的不稳定性区域的问题。这研究的目的是在横梁不稳定性上分析一个灵活关节的特征的效果使用最大值可忍受的的推进力量。参量的研究被进行由夸耀方法和 Newmark 方法在批评追随者力量上调查僵硬和关节的地点的效果,然后研究结构的震动的性质。不稳定性的性质在僵硬和关节的地点上相当无法预言、依赖,这被显示出。追随者力量或横过的力量的增加将增加模型的颤动并且因而在太空结构的控制系统引起破坏现象。而且,这篇论文介绍参量的途径的一个新概念分析一个灵活二阶段的太空结构关节图案的特征效果。 This paper deals with the problem of the instability regions of a free-free flexible jointed bipartite beam under the follower and transversal forces as a realistic simulation of a two-stage aerospace structure. The aim of this study is to analyze the effects of the characteristics of a flexible joint on the beam instability to use maximum bearable propulsion force. A parametric study is conducted to investigate the effects of the stiffness and the location of the joint on the critical follower force by the Ritz method and the Newmark method, then to research the vibrational properties of the structure. It has been shown that the nature of instability is quite unpredictable and dependent on the stiffness and the location of the joint. The increase of the follower force or the transversal force will increase the vibration of the model and consequently cause a destructive phenomenon in the control system of the aerospace structure. Furthermore, this paper introduces a new concept of the parametric approach to analyze the characteristics effects of a flexible two-stage aerospace structure joint design.
作者 Saied IRANI Omid KAVIANIPOUR Saied Irani[1];Omid Kavianipour[1]
出处 《浙江大学学报:A卷英文版》 SCIE EI CAS CSCD 2009年第9期1252-1262,共11页 Journal of Zhejiang University Science
关键词 航空航天结构 NEWMARK法 振动特性 RITZ法 不稳定 联合使用 破坏现象 控制系统 Two stage to orbit launch vehicle (TSTO LV), Beam instability, Follower force, Ritz's method, Newmark's method
作者简介 E-mail: irani@kntu.ac.ir
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参考文献10

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