Abstract: The thermal reactions of booster device during slow heating are investigated. A small cook-off test is completed to assess both the reaction temperature and exothermic behavior of the material at a slow heating rate. The reaction kinetics of JH-14C are determined using differential scanning calorimetry (DSC) experiments, and the thermal decomposition characteristics are implemented into a 3D fully transient hydrocode and corrected by direct comparison with the subscale cook-off test results. The decomposited activation energies and pre-exponential factor of JH-14C are 2.04×10⁵ J/mol and 5.59×10¹⁷ s^-1, respectively. Based on the available thermal decomposition characteristics, the cook-off processes of booster device are simulated at four different heating rates. The results show that the booster charge explodes first and than the detonating explosive detonates. The explosion of detonating explosive is caused by the detonation wave which is produced by the explosion of booster charge. The ignition locations inside the booster charge at different heating rates differ, and remove from the center of booster charge cylinder to its edge with the increase in heating rate. The heating rate has no much influence on ignition temperature. Key

Key words: ordnancescienceandtechnology, boosterdevice, differentialscanningcalorimetryanalysis, thermaldecompositionkinetics, cook-offtest, numericalsimulation