This paper deals with impact vibration in beam system excited by periodic displacement with cosine function. The analytical model is steady impact vibration for a Cantilever beam. The beam collides elastically to clamped steel of dissymmetric faces at an arbitrary midpoint of span. Assuming that force of restitution has a triangle hysteresis loop characteristics, the Fourier series is applied to response of the beam. For verification of the analytical method, experiments are performed. The analytical results are in a fairly good agreement with the experimental ones.
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