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为了掌握爆轰波碰撞时的爆压和能量汇聚的规律,对爆轰波各种碰撞的爆压变化进行研究。首先基于爆轰波碰撞理论分析.得出爆轰波在正碰撞、斜碰撞和马赫反射三种条件下的爆压变化,确定马赫反射发生的条件,然后绘制入射角、偏离角和反射角间的关系曲线。应用Ls-dyna数值软件对爆轰波碰撞产生马赫反射的过程进行模拟。对比模拟和理论计算结果得知.对于多方指数为2.4的铵油炸药,马赫反射发生在斜爆轰波入射角为46.4°时,此时马赫波后压强达到最大值13.2 GPa,并在马赫波后形成高压区域。
In order to grasp the rules of explosive pressure and energy convergence during the detonation wave collision, the explosion pressure variations of various kinds of collision of detonation wave were studied. Firstly, based on the analysis of the detonation collision theory, the detonation pressure changes under normal collision, oblique collision and Mach reflection are obtained, and the conditions of Mach reflection are determined, and then the incident angle, deviation angle and reflection angle The relationship curve. Ls-dyna numerical software was used to simulate the Mach-induced reflections of detonation waves. Comparing the results of simulation and theoretical calculation, the Mach-reflex occurs when the angle of incidence of the detonation detonation wave is 46.4 ° for the ammonium multiple explosives with a multi-factor index of 2.4, at which point the Maw wave pressure reaches a maximum of 13.2 GPa, After the formation of high pressure area.