Research On The Unreacted State Equation Of JB-9014 Explosive

The equation of state(EOS)is a function that describes the relation between the parameters of the thermodynamic state in an equilibrium state system.Due to the complexity of the structure of explosive,single experimental measurement or theoretical analysis can't be used to complete the study of the equation of state of the explosive.At present,the method of combining experiment and theory is mainly used to study the state of equation of the unreacted explosive,that is to use the experiment to measure the Hugoniot line of the explosive,and then to calibrate the parameters in the theoretical model according to the measured Hugoniot line.So far,there are many methods for testing Hugoniot line of the explosive at home and abroad.In this paper,one-dimensional plane impact tests of JB-9014 explosive are carried out by using the artillery loading system.The reaction growth processes of JB-9014 explosive under different impact pressure are obtained by using the PDV,PVDF pressure gauge.The impact Hugoniot relationship and the Griineisen parameter were determined by testing data,and the state equation of the unreactive JB-9014 explosives was calibrated by the impact Hugoniot line.In this paper,the research results are as follows:1.One-dimensional plane impact tests of JB-9014 explosive were carried out by the gun loading system at room temperature.The reaction growth processes of JB-9014 explosive under different impact pressure were obtained by using the PDV.The Hugoniot data of the JB-9014 explosive in the 3.1?9.7Gpa pressure range was obtained by further processing of the experimental data,and the impact Hugoniot line of the JB-9014 explosive was obtained by the linear regression fitting.2.One-dimensional plane impact tests of JB-9014 explosive were carried out by the gun loading system at room temperature.The reaction growth processes of JB-9014 explosive under different impact pressure were obtained by using the PVDF gauges.In the case of the assumption that gamma was constant,the change course of the pressure with time of the front surface and the middle surface of the explosive sample under different gamma values were calculated by using the obtained impact Hugoniot line of the JB-9014 explosive.The calculated values of different gamma values were compared with the experimental values,and the optimum value of Gruneisen parameter of JB-9014 explosive was obtained as ?=1.7.3.The parameters of the wide zone equation of state and the JWL equation of state of the JB-9014 explosive were calibrated by using the impact Hugoniot line measured at room temperature.