DUAL PHASE DAMPING IN SIMPLE SHOCK MOUNTS

Abstract

Response of a simple mounted system to time varying transients like rounded step and pulse displacements applied at the foundation is investigated. The system employs a dual-phase damping characteristic defined by a set of four parameters. Variations of the peak acceleration and displacement with these time parameters are computed. Optimum values of the parameters at which the minimum peak acceleration or minimum peak displacement occurs are then sought. The main advantage in using a dual-phase damping over single phase constant damping is the facility of minimising the peak acceleration or displacement.