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http://dx.doi.org/10.5050/KSNVE.2012.22.9.879

Nonlinear Dynamic Analysis of Space Truss by Using Multistage Homotopy Perturbation Method  

Shon, Su-Deok (한국기술교육대학교 건축공학부)
Ha, Jun-Hong (한국기술교육대학교 교양학부)
Lee, Seung-Jae (한국기술교육대학교 건축공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.22, no.9, 2012 , pp. 879-888 More about this Journal
Abstract
This study aims to apply multistage homotopy perturbation method(MHPM) to space truss composed of discrete members to obtain a semi-analytical solution. For the purpose of this research, a nonlinear governing equation of the structures is formulated in consideration of geometrical nonlinearity, and homotopy equation is derived. The result of carrying out dynamic analysis on a simple model is compared to a numerical method of 4th order Runge-Kutta method(RK4), and the dynamic response by MHPM concurs with the numerical result. Besides, the displacement response and attractor in the phase space is able to delineate dynamic snapping properties under step excitations and the responses of damped system are reflected well the reduction effect of the displacement.
Keywords
Homotopy Perturbation Method; Multistage Homotopy Perturbation Method; Analytical Method; Space Truss; Nonlinear Dynamic Analysis; Geometric Non-linearity;
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Times Cited By KSCI : 2  (Citation Analysis)
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