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为了提高舰船及其设备的抗冲击能力，满足最新抗冲击标准的要求，同时提高传统冲击试验机的最大测试能力，提出了一套全液压驱动的新型重载舰船设备抗冲击试验系统模型，以解决系统高能量存储及瞬间释放和避免二次撞击的关键问题. 构建了系统非线性动力学模型，并利用数值计算方法考察了在不同冲击速度测试条件下冲击机系统所能达到的预期性能. 结果表明: 该系统可以产生与最新抗冲击标准BV043/85和MIL-S-901D相吻合的冲击加速度波形，同时可根据不断提高的抗冲击标准以及测试能力要求进行相应的扩展.

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.