Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Analysis of the effect of altitude on the pressure distribution pattern of chemical explosion shock wave
| DOI: | 10.11809/bqzbgcxb2024.02.020 |
| Keywords: | blast shock wave; altitude; numerical simulation model; pressure distribution pattern |
| Abstract: | Altitude causes changes in air density and pressure, directly affecting the propagation pattern of shock wave pressure in the air medium. The study used AUTODYN to establish a numerical simulation model for propagating blast wave pressure at altitudes of 0, 1 000, 2 000, 3 000, and 4 500 m. It performed numerical simulations for equivalent TNT equivalent conditions of 10, 30, and 50 kg. The analysis results show that altitude affects the pressure distribution of the shock wave. The results show that the altitude significantly affects the shock wave pressure, which is reflected in the fact that under the exact equivalent TNT equivalent, with the increase of altitude, the peak shock wave overpressure and specific impulse gradually decrease. The peak arrival time gradually advances with the increase of the distance of the measurement point. With the equivalent TNT equivalent increase, the peak blast shock wave pressure and specific impulse gradually increase, and the peak arrival time gradually. The numerical simulation results are in good agreement with the test results. This study reveals the effect of altitude on the distribution of blast wave propagation and provides adequate theoretical support for practical engineering tests. |
| Published: | 2024-02-28 |