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

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