截卵形弹体Taylor撞击的变形特点和冲击载荷特性

The impact deformation characteristics and impact load characteristics of truncated ogival nose projectile are analyzed through theory and experiment. The impact load generated by projectile in Taylor impact test is analyzed. Based on the classical Taylor impact theory of blunt projectile, an impact analysis model of ogival nose projectile was established, and the conservation equation of momentum and impulse was modified. The predicting results of the modified model are closer to the actual results. A series of Taylor-Hopkinson impact tests on the cylindrical projectiles with truncated ogival and blunt nose shape were carried out, the impact-induced deformation characteristics of projectiles and variation characteristics of impact load were specifically analyzed for the two kinds of projectiles, and the overall high g-load that the projectiles were subjected to was further discussed. The results show that the nose shape significantly changes the waveform and pulse duration of impact load, and the impact velocity primarily affects the peak value of impact load. The impact characteristics can be regulated by the nose shape design of projectile and the control of impact speed. The results support the assumption that the Taylor impact test can be applied to high-g loading test.