CAJ | 학술논문

为研究装药尺寸与限定条件下炸药热起爆临界温度之间的关系，利用自行设计的烤燃试验装置，以 RDX为主的J H 炸药为试验材料，在1℃/min的升温速率下，采用恒温控制技术进行了不同温度下的烤燃试验。利用 FLUENT软件对不同装药尺寸下炸药的热起爆恒温临界温度进行了数值计算，研究了装药尺寸对炸药热起爆恒温临界温度的影响。试验结果表明，烤燃弹存在一个热起起爆恒温临界温度。仿真结果表明：当药柱的长径比相同时，随着药柱尺寸的增加，炸药的热起爆恒温临界温度逐步降低。当药柱尺寸增大到一定值时，装药尺寸对烤燃弹的热起爆恒温临界温度的影响将减弱。装药尺寸对点火点的位置无影响，均为中心点火。
위연구장약척촌여한정조건하작약열기폭림계온도지간적관계，이용자행설계적고연시험장치，이 RDX위주적J H 작약위시험재료，재1℃/min적승온속솔하，채용항온공제기술진행료불동온도하적고연시험。이용 FLUENT연건대불동장약척촌하작약적열기폭항온림계온도진행료수치계산，연구료장약척촌대작약열기폭항온림계온도적영향。시험결과표명，고연탄존재일개열기기폭항온림계온도。방진결과표명：당약주적장경비상동시，수착약주척촌적증가，작약적열기폭항온림계온도축보강저。당약주척촌증대도일정치시，장약척촌대고연탄적열기폭항온림계온도적영향장감약。장약척촌대점화점적위치무영향，균위중심점화。
In order to study the relationship between charge size and thermal initiation critical temperature of explosive in defined conditions,cook-off test about JH explosive was carried out at a heating rate of 1 ℃/min using self-designed cook-off experi-ment setup based on thermostatic control technology.Numerical simulation was conducted to study the effects of different charge sizes on thermal initiation critical temperature of explosives with FLUENT software.Experiment results show that there is a thermal initiation critical temperature in cook-off bomb.Simulation results show that when the ratio of the length to diame-ter of explosives grains is a fixed value,the thermal initiation critical temperature of explosives decreases with the increase of the diameter of explosives grains.When the grains diameter of explosives increase up to a certain value,the influence of charge size on thermal initiation critical temperature tends to be weakened.Charge size has no influence on the ignition point of explo-sives.The ignition point is always in the center of the grain.