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

In order to improve the shock resistance ofshipboard equipment as well as to increase the testing capability of the shocktesting system, a novel high-energy hydraulically-actuated anti-shocktesting system is proposed. The key techniques to store and release high energy instantly, and to avoid second impacting during shock testsare related with a novel velocity generator. A nonlinear dynamic model ofthis system is established, which can produce the required shock pulsein agiven time duration. Then a numerical simulation about the system iscarried out toevaluate the prospective capability of the shock testing machine underdifferent shock velocity inputs. The simulation results showthat the shock testing machine proposed in this paper can produce nearly thesame shock acceleration waveform as opecified by the new shock resistance standardBV043/85 and MIL-S-901D. Moreover, this shock testing machine can beadjusted conveniently to test different types of equipment and beextended easily to satisfy more severe shock standard and heavier equipment.