Abstract: According to the special anti-shock requirements of the shipboard piping systems, a new damper with big capacity and high-energy dissipated rate is designed. Based on the geometrical structure of the new damper, the mechanical model of this damper is derived using the mathematic method. The parameters in the mechanical model are solved by numerically simulating the single-degree-of-freedom system, which is composed of the new damper and the drop machine. In order to verify this model, the damping force versus shock velocity curves causing by three different drop heights are considered. The excellent agreement between the experimental and theoretical damping force versus shock velocity curves validates the credibility of the mechanical model.

Key words: Damper, Drop test, Dynamics performance, Mechanical model