고속 비행하는 두 물체의 충돌 각도에 따른 파괴거동 분석

초록

Collision of two high-speed flying objectives causes a critical damage in each object according to the relaative velocity, angle, and shape. In this work, the collision of two flying objectives at high speed was analyzed numerically, and here the objectives were set by conical shape at the velocity of 1500 m/s and cylindrical shape of 500 m/s velocity, respectively. In particular, fracture characteristics of the objectives were investigated in terms of residual mass, residual velocity and residual kinetic energy corresponding to the impact angles between two projectiles from 0〫〫˚ to 60〫˚. As shown in results, the conical objective was locally frctured and the cylindrical objective was completely fractured after the collision. In additioin, the residual velocity of the conical objective gradually decreased after 15〫˚collision, and the residual mass and the residual kinetic energy were the lowest at 30〫˚. Based on these results, it was confirmed that the critical fracture for the two high-speed flying objectives resulted from a specific impact angle.

키워드