Development of a novel shock tube system to study shock-induced motion of a solid body

Abstract

This note presents a promising shock tube system to study the motion of a solid body induced by a propagating shock wave. The system consists of a horizontally-placed shock tube with a spring-loaded knife-edge to rupture the diaphragm separating the driver and driven sections. It also includes a solid-body injecting device installed on the floor of the test section. The injection timing of the solid body and the diaphragm rupture are synchronized using a digital delay circuit. Key features include suspending a solid body in midair without supports and adjusting its posture, allowing precise control of initial conditions and enabling more detailed shock wave interaction studies. A series of experiments with a rectangular solid body in three different initial postures successfully demonstrated the system’s capabilities.