爆炸与冲击2025，Vol.45Issue(9)：132-140,9.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
Determination of JWL equation of state based on the detonation product from underwater explosion
摘要
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 Es0(initial shock wave energy),Ept(potential energy of water),Ec(kinetic energy of water)and Er(energy loss by bubble expansion),which are related to the underwater explosion bubble radius(R-t)and shock wave front(Rs-t)measured in the underwater explosion 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 detonation products with low cost,reduced size limitations and a wide pressure range.关键词
水下爆炸/JWL状态方程/气泡膨胀/冲击波Key words
underwater explosion/JWL equation of state/bubble expansion/shock wave分类
数理科学引用本文复制引用
焦俊杰,何勇,单锋,王晗程,祁妍洁,潘绪超,方中,程宇波,贺小兰,慈圣杰..基于水下爆炸的爆轰产物JWL状态方程确定方法研究[J].爆炸与冲击,2025,45(9):132-140,9.基金项目
国家自然科学基金(62201267,12372334) （62201267,12372334）
