Numerical Simulation of the Propagation Law of Explosion Shock Wave in Turning Tunnel

Wenjun YU; Shengyun CHEN; Shuxin DENG; Bingbing YU; Dongyan JIN

doi:10.12382/bgxb.2023.0889

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Numerical Simulation of the Propagation Law of Explosion Shock Wave in Turning Tunnel

更新时间：2025-08-18

- Numerical Simulation of the Propagation Law of Explosion Shock Wave in Turning Tunnel
- Acta Armamentarii Vol. 44, Issue S1, Pages: 180-188(2023)
- 作者机构：
  
  1. 南京理工大学机械工程学院, 江苏南京 210094
  2. 军事科学院国防工程研究院, 北京 100850
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2023.0889
  CLC：
- Received：06 September 2023，
  
  Published Online：03 January 2024，
  
  Published：08 December 2023
- 稿件说明：
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Wenjun YU, Shengyun CHEN, Shuxin DENG, et al. Numerical Simulation of the Propagation Law of Explosion Shock Wave in Turning Tunnel[J]. Acta Armamentarii, 2023, 44(S1): 180-188.
DOI：

Wenjun YU, Shengyun CHEN, Shuxin DENG, et al. Numerical Simulation of the Propagation Law of Explosion Shock Wave in Turning Tunnel[J]. Acta Armamentarii, 2023, 44(S1): 180-188. DOI： 10.12382/bgxb.2023.0889.

摘要

基于LS-DYNA软件对单次变向通道内

TNT爆炸进行模拟以验证利用LS-DYNA模拟的准确性

研究了变向角度

和曲率半径

对变向通道内冲击波传播规律的影响。研究结果表明

当

和

较小时

和

的变化对通道变向处冲击波参数的变化影响较大

对于远场处的影响较小;当

为90°、

为0mm时

通道内变向处外壁面所受压力是内壁面所受压力的2.17倍;随着

的增大

反射冲击波超压峰值减小

冲击波能量分配趋于变向后通道

远场处超压峰值先减小后增大;随着

的增加

冲击波在变向处的反射现象不明显

反射冲击波的超压峰值低;随着

和

的增加

外壁面与内壁面所受反射压力超压峰值之差减小;当

和

分别增加到一定程度时

改变

和

对整个通道内冲击波参数变化的影响并不明显

但外壁面压力仍然略高于内壁面压力。

Abstract

Based on the LS-DYNA software

a single TNT explosion in a turning tunnel is simulated to verify the accuracy of the simulation using LS-DYNA

and the effects of the variable angle

and the radius of curvature

on the propagation law of shock wave in the turning tunnel are studied. The results show that

when

and

are small

the changes of

and

have a greater effect on the changes of shock wave parameters at the tunnel deflection

and the effect is smaller at the far field; when

is 90° and

is 0mm

the pressure on the outer wall surface at the deflection in the tunnel is 2.17 times of the pressure on the inner wall surface. With the increase of

the peak overpressure of the reflected shock wave decreases

and the energy distribution of the shock wave tends to change to the back tunnel

and the peak overpressure at the far field decreases first and then increases; with the increase of

the reflection phenomenon of the shock wave at the change of direction is not obvious

and the peak overpressure of the reflected shock wave is low; and with the increase of

and

the difference between the peak overpressures of th

e reflected pressures received by the outer wall surface and the inner wall surface decreases. When

and

are increased to a certain degree

respectively

the effect of changing

and

on the change of shock wave parameters in the whole tunnel is not obvious

but the pressure on the outer wall surface is still slightly higher than that on the inner wall surface.

关键词

Keywords

references

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