Volume 35 Issue 5
Sep 2021
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XU Rui, ZHI Xiaoqi, YU Yongli, GAO Feng. Response Mechanism of Fuse with Different Structures under Thermal Stimulation[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 055101. doi: 10.11858/gywlxb.20210720
Citation: XU Rui, ZHI Xiaoqi, YU Yongli, GAO Feng. Response Mechanism of Fuse with Different Structures under Thermal Stimulation[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 055101. doi: 10.11858/gywlxb.20210720

Response Mechanism of Fuse with Different Structures under Thermal Stimulation

doi: 10.11858/gywlxb.20210720
  • Received Date: 04 Feb 2021
  • Rev Recd Date: 06 Mar 2021
  • To study the response characteristics of the fuse with venting structure, the self-designed fuse venting device is used to study the effect of venting device on the reaction violence of the fuse under cook-off. The results show that under slow cook-off, the reaction violence of fuse is deflagration without venting structure, and the fuse structure is destroyed. The reaction violence with the venting structure is combustion. Under fast cook-off, the reaction violence fuse is deflagration when there is no venting structure, the bottom end cover of the fuse is damaged, and the reaction violence is burning with the venting structure. The temperature inside the explosive is obtained through numerical simulation. The ignition point of slow cook-off is located at the center of the booster, and the ignition point of fast cook-off is at the bottom of the booster. Different ignition positions make the pressure release process of the booster different. Slow cook-off uses the pressure of the center ignition to form an exhaust channel from the center to the venting structure to release the internal pressure. In the fast cook-off test, after the venting structure releases part of the pressure, the remaining pressure causes the bottom end cover to burst.

     

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