21715 非線形ばねで連結された両端単純支持はりの定常強制振動解析 : はりスパン中央に付加質量を持つ場合(アクティブ・係数励振系,OS.4 振動・音響の制振技術,学術講演)

概要

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This paper deals with the response analysis of -nonlinear vibration in continuous system excited by periodic displacement with arbitrary functions. A system of steady vibration in a simply-supported-beam with an attached mass held by a nonlinear spring at midpoint of span is considered. The restoring force is assumed to be a piecewise-linear system. For such a system, the beam undergoes a nonlinear vibration when the amplitude is large. In order to analyze the main resonance for the system, the Fourier series method is applied to obtain an exact solution for resulting vibration. The numerical calculation is performed to obtain the resonance curves. The numerical results show effects of the stiffness of attached spring, the amplitude of excitation and the attached mass ratio on the resonance curves. The experiments are also performed to verify the numerical results.
社団法人日本機械学会の論文
2008-03-13