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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.9 P.1252~1262

http://doi.org/10.1631/jzus.A0820621


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


Author(s):  Saied IRANI, Omid KAVIANIPOUR

Affiliation(s):  Department of Aerospace Engineering, K. N. Toosi University of Technology, Tehran, Iran

Corresponding email(s):   irani@kntu.ac.ir

Key Words:  Two stage to orbit launch vehicle (TSTO LV), Beam instability, Follower force, Ritz&rsquo, s method, Newmark&rsquo, s method


Saied IRANI, Omid KAVIANIPOUR. Effects of a flexible joint on instability of a free-free jointed bipartite beam under the follower and transversal forces[J]. Journal of Zhejiang University Science A, 2009, 10(9): 1252~1262.

@article{title="Effects of a flexible joint on instability of a free-free jointed bipartite beam under the follower and transversal forces",
author="Saied IRANI, Omid KAVIANIPOUR",
journal="Journal of Zhejiang University Science A",
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pages="1252~1262",
year="2009",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0820621"
}

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%T Effects of a flexible joint on instability of a free-free jointed bipartite beam under the follower and transversal forces
%A Saied IRANI
%A Omid KAVIANIPOUR
%J Journal of Zhejiang University SCIENCE A
%V 10
%N 9
%P 1252~1262
%@ 1673-565X
%D 2009
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0820621

TY - JOUR
T1 - Effects of a flexible joint on instability of a free-free jointed bipartite beam under the follower and transversal forces
A1 - Saied IRANI
A1 - Omid KAVIANIPOUR
J0 - Journal of Zhejiang University Science A
VL - 10
IS - 9
SP - 1252
EP - 1262
%@ 1673-565X
Y1 - 2009
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0820621


Abstract: 
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.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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