Single-pulse experimentation device based on hopkinson pressure bar and experimentation method

A single-pulse experimentation device based on a Hopkinson pressure bar, wherein the single-pulse experimentation device comprises an experimentation assembly and a pulse controlling assembly, the experimentation assembly comprises a power generating mechanism, an incident bar and a transmission bar, a space between the incident bar and the transmission bar is for accommodating a sample, and the sample is for bearing and transferring a dynamic-loading compressional wave transmitted by the incident bar;

• the pulse controlling assembly comprises:
• a stretching assembly that is internally hollow and is connected to the transmission bar;
• and
• an elastic assembly and a gear regulating mechanism that are located inside the stretching assembly and are connected to corresponding positions of the stretching assembly, respectively;
• wherein the gear regulating mechanism is configured for driving the stretching assembly to switch between a first position state and a second position state;
• and
• when the stretching assembly has received the dynamic-loading compressional wave propagated by the transmission bar for a first time, the stretching assembly drives the gear regulating mechanism to drive the stretching assembly to switch from the first position state to the second position state, to, in a direction of transmission of the dynamic-loading compressional wave, by using the elastic assembly, drive the stretching assembly to contract, so that the transmission bar and the sample are disengaged from contacting.