異なる二つのはりで構成される連続体の定常衝突振動解析

抄録

In this study, steady-state collisional vibration for a continuous system subjected to periodic excitation is analysed. The analysis model is a simply-supported-beam composed of two different beams with additional mass at the middle position in the beam span. Each beam is modeled by young's modulus, second moment of area, area of cross section and degree of density. The added mass elastically collides with elastic bodies having certain spring constant and collision gap at the middle position. In the analysis, Fourier series method is applied, and an exact solution of response oscillation is proposed. Numerical calculations are performed from the exact solution of the response oscillation. The response vibration waveforms are obtained and resonance curves are created with the spring constant ratio of the collided spring, the added mass ratio, the excitation amplitude ratio of the collision gap, the bending stiffness ratio, the linear density ratio as a parameter. Furthermore, experiments are carried out to verify the effectiveness of this analysis.