MECHANISM ANALYSIS AND SIMULATION FOR A NOVEL ANTI-SHOCK TESTING SYSTEM FOR HEAVY-WEIGHT SHIPBOARD EQUIPMENT

Abstract

In order to improve the shock resistance of shipboard equipment as well as to increase the testing capability of the shock testing system,a novel high-energy hydraulically-actuated anti-shock testing system is proposed.The key techniques to store and release high energy instantly,and to avoid second impacting during shock tests are related with a novel velocity generator.A nonlinear dynamic model of this system is established, which can produce the required shock pulse in a given time duration.Then a numerical simulation about the system is carried out to evaluate the prospective capability of the shock testing machine under different shock velocity inputs.The simulation results show that the shock testing machine proposed in this paper can produce nearly the same shock acceleration waveform as opecified by the new shock resistance standard BV043/85 and MIL-S-901D.Moreover,this shock testing machine can be adjusted conveniently to test different types of equipment and be extended easily to satisfy more severe shock standard and heavier equipment.