Nonlinear dynamics of a flexible portal frame under support excitation
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This paper presents a nonlinear dynamic analysis of a flexible portal frame subjected to support excitation, which is provided by an electro-dynamical shaker. The problem is reduced to a mathematical model of four degrees of freedom and the equations of motion are derived via Lagrangian formulation. The main goal of this study is to investigate the dynamic interactions between a flexible portal frame and a non-ideal support excitation. The numerical analysis shows a complex behavior of the system, which can be observed by phase spaces, Poincaŕ sections and bifurcation diagrams. © 2012 American Institute of Physics.
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Electro-dynamical shaker, flexible portal frame, nonlinear dynamics
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Inglês
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AIP Conference Proceedings, v. 1493, p. 957-963.
