爆炸是自然界中经常发生的一种物理与化学的过程,在爆炸过程中,以极高的速度释放出能量.爆炸产物对周围介质作功,产生破坏作用,如破坏弹体形成杀伤破片,爆破矿山抛掷土石,在介质中形成冲击波、应力波等.爆炸的主要特征是在爆炸中心周围的介质中产生压力突跃,这种压力上升前沿只有几个微秒.爆炸力学学科就是要从定性、定量两方面来描述爆炸过程的力学,这是一门边缘性学科,它涉及爆轰物理学,其内容包括炸药的化学反应特征,炸药的爆轰过程及爆轰参数的理论与工程计算方法等;爆炸气体力学,其内容包括爆炸产物在其形成的特定流场中各个参量:压力场,密度场的计算.介质材料对爆炸作用 Explosion is a kind of physical and chemical process that often happens in nature, and releases energy at a very high speed in the process of explosion. Explosive products work on the surrounding medium and produce damaging effects, such as destruction of the projectile to form kill fragments and blasting Mine throwing earth and rock in the medium to form shock waves, stress waves, etc. The main feature of the explosion in the medium around the center of the explosion pressure jump, the pressure rising front with only a few microseconds.Express mechanics is to qualitative, Quantitative two aspects to describe the mechanics of the explosion process, which is a marginal discipline, which involves the detonation physics, which includes the chemical reaction characteristics of explosives, explosive detonation process and detonation parameters of the theory and engineering calculation methods ; Explosive gas mechanics, which includes the various parameters of the explosive products in the specific flow field they form: the calculation of the pressure field and the density field. The effect of the dielectric material on the explosion