Abstract:

Based on the concept of energy dissipation, a novel structure of a regulator was presented herein with thorough analyses of its working mechanism. The design comprised a set of valves connecting with a hydraulic bumper. By virtue of orifice throttling, the hydraulic bumper dissipated the kinetic energy of a moving load with high speed and decelerated it to generate the desired shock pulses. By establishing motion equations of each component and simulating the dynamic behavior of the whole system, the shock wave regulator was demonstrated numerically to be able to change the width and amplitude of shock pulses. Prompt and easy adjustment is achieved by changing the equivalent flow area of damping orifices and consequently the closing velocity of the flow area of a valve, which makes it applicable to different impact tests.

Key words: shock wave regulator, shock test, shock test machine, hydraulic bumper, underwater explosion

摘要：

基于液压节流耗能原理，提出一种新型冲击波形调节器的结构，其设计思想是采用小孔节流产生的阻尼来吸收消耗高速运动负载的动能，并对其紧急制动使负载获得设定的冲击波形。对冲击波形调节器的工作原理进行了介绍与分析，通过对设计参数的仿真研究，证明调节器的设计在原理上是可行的，可方便地通过调节阀芯的运动速度来改变制动过程中冲击波形的脉宽和幅值，从而满足不同的冲击试验要求。

关键词: 冲击波形调节器, 冲击试验, 冲击试验机, 液压缓冲器, 水下爆炸