Numerical Simulation And Experimental Study Of The Response Characteristics Of The Booster Explosive Cook-off

Cook-off test(Cook-off test) is an important method of thermal safety of energetic materials research can be measured at high temperature reactions of explosives, propellants and booster charge and other energetic materials. Since Cook-off test capable of Energetic Materials component test, test conditions closer to the conditions of use of weapons and ammunition, so use it to study in arms and ammunition Explosives thermal safety, conclusion and get closer to the actual situation of explosives during use thermal safety analysis and evaluation of more practical significance.This paper established Booster cook-off model, using finite element program LS-DYNA3 D nonlinear solver Booster cook-off in the process of heat transfer conditions were simulated. For elemental explosives RDX and mixed explosives JO-9C numerical simulation, focusing on simulation of the charge density, air-area location and size, heating rate, charge size, insulation material response time, in response to temperature and the reaction position impact and get it investigated.Independent design build Booster cook-off testing systems. Wherein the cook-off ammunition column size Φ16 * 64 mm, the heating rate can reach 60 K / min, heating rate control and stability. Cook-off test system consists of a small bomb, an electric heating mantle,temperature control systems, shock test systems and explosion protection systems. The test system debugging, you can complete the cook-off material can contain task performance testing to meet test requirements.Use Booster cook-off test systems, test different booster explosive reaction temperaturefor the delimitation of its response level. JO-9C explosives on fast slow cook-off test, study the different charge density, under different conditions and different vent insulation material conditions of cook-off cook-off response. Analyzed by cook-off bomb shell damage, the reaction was judged to optimize their level.By cook-off test data is compared with the simulation test data to verify simulation results of the simulation formulas and parameters correction to finally obtain a more complete cook-off test simulation system is fully baked combustion performance tests for Energetic Experimental research on fuel materials roasted reference.Booster cook-off system and the established method, compared to other thermal analysis tools can contain its more fit reality,better able to provide experimental evidence for energetic materials under thermal stimulation safety assessment.