Page 135 - 《爆炸与冲击》2025年第9期

第 45 卷 第 9 期 爆 炸 与 冲 击 Vol. 45, No. 9
2025 年 9 月 EXPLOSION AND SHOCK WAVES Sept., 2025

DOI：10.11883/bzycj-2024-0203

基于水下爆炸的爆轰产物 JWL 状态方程

确定方法研究 *

焦俊杰，单 锋，王晗程，祁妍洁，潘绪超，方 中，程宇波，贺小兰，慈圣杰，何 勇

（南京理工大学机械工程学院，江苏 南京 210094）

摘要： 为了获得炸药爆轰产物状态方程，对 RDX 炸药进行了水下爆炸气泡膨胀过程试验，测试了水下爆炸气泡
半径和冲击波阵面随时间的变化规律，通过水下爆炸气泡膨胀过程中的能量守恒关系，获得了基于水下爆炸试验的爆
轰产物 JWL 状态方程确定方法，分析了 RDX 炸药水下爆炸气泡膨胀和冲击波阵面运动过程，测定了 RDX 炸药爆轰产
物 JWL 状态方程参数，并与通过圆筒试验获得的参数进行了比较。结果表明，通过水下爆炸法和圆筒试验方法标定
的 JWL 方程参数得到的气泡膨胀过程基本相同，而水下爆炸法得到的气泡半径的计算值和试验值在低压阶段的误差
更小。该方法提供了一种更适用于水下爆炸的炸药爆轰产物状态方程的测定方法。
关键词： 水下爆炸；JWL 状态方程；气泡膨胀；冲击波
中图分类号： O381 国标学科代码： 13035 文献标志码： A

Determination of JWL equation of state based on the detonation product
from underwater explosion

JIAO Junjie, SHAN Feng, WANG Hancheng, QI Yanjie, PAN Xuchao, FANG Zhong,
CHENG Yubo, HE Xiaolan, CI Shengjie, HE Yong
（Mechanical Engineering College, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China）

Abstract: The equation of state for the detonation products of explosives is one of the foundations in explosion physics. JWL
equation of state has been widely applied to study the properties of various explosives. In order to obtain the equation of state
of the detonation products, an underwater explosion method was used to study JWL equation of state for the detonation of
RDX. It considered the explosion bubble expansion process based on the conservation of energy including E (initial shock
s0
wave energy), E (potential energy of water), E (kinetic energy of water) and E (energy loss by bubble expansion), which are
c
pt
r
related to the underwater explosion bubble radius (R-t) and shock wave front (R -t) measured in the underwater explosion
s
experiments as functions of time. Based on the experimental results and using the same method to process the experimental
data in cylinder experiment, the time functions of explosion bubble expansion radius and variation of shock wave front position
were fitted and the parameters of the JWL equation of state for RDX detonation products were obtained. In order to analyze the
accuracy of the parameters of the JWL equation of state obtained by the underwater explosion method, the time history of the
underwater explosions bubble pulsating pressure wave was calculated using the bubble dynamics equation. It shows that the
calculation results agree well with the bubble expansion radius and bubble pulsation period determined using the underwater
explosion experiments in a pool. The calculated bubble radius obtained by the proposed measurement method has a smaller
deviation from that obtained by the cylinder experimental value, especially in the low-pressure stage compare with the JWL
state parameters obtained from cylinder method. This method provides a testing approach for the equation of state of

* 收稿日期： 2024-06-27；修回日期： 2024-10-18
基金项目： 国家自然科学基金（62201267，12372334）
第一作者： 焦俊杰（1984－ ），男，博士，副教授，jjj120@njust.edu.cn
通信作者： 何 勇（1964－ ），男，博士，教授，yhe1964@njust.edu.cn

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