322 変位周期励振を受ける固定-単純支持はりの衝突振動解析 : はり途中で弾性衝突する場合

Abstract

This paper deals with impact vibration in continuous system excited by periodic force with arbitrary functions. The analytical model is steady impact vibration for a fixed-simply supported beam. The beam collides elastically to clamped spring of symmetric faces at an arbitrary midpoint of span. In order to clarify the main resonance of the system subjected to excitation by displacement, the resulting vibrations are analyzed by applying the Fourier series method for this system. Following these theoretical analyses, numerical calculations are performed, and the resonance curves are made by using the resulting vibration. Effects of the stiffness of clamped spring, the collision position ratio and the amplitude of excitation on the resonance curves are shown by numerical results. For verification of the analytical method, experiments are performed. The numerical results are in a fairly good agreement with the experimental ones.