【摘要】 介绍了一种在气炮上研究材料冲击压缩特性的反向冲击法,即将待测试样装在弹头上,用电磁粒子速度计测量有机玻璃靶中的波后粒子速度,依据阻抗匹配原理来换算待测材料的动力学状态量。该方法对研究岩石类等特殊材料(如非均匀材料、铁磁材料、导电材料、昂贵材料、难加工材料)的冲击压缩特性是非常有益的。更多还原

【Abstract】 The reverse ballistic configuration to study the impact compression properties of material by means of a light-gas gun was described.In the test a disc-shaped specimen of the test material was mounted in the projectile and caused to undergo planar impact on a stationary diagnostic targets of PMMA.The electromagnetic particle velocity gages embedded in the target were used to obtain the experimental data,and the dynamic states of the test medium was determined by use of the impedance match method.It is helpful for studying the impact compression properties of rocks and other special materials such as inhomogeneous,ferromagnetic,electric,expensive,and hard to machine.更多还原