Characterization of Secondary Debris-cloud Distribution of Ice-particle Hypervelocity Impact on Honeycomb Sandwich Panel

Abstract

In order to obtain the axial distribution characteristics of the secondary debris-cloud after the hypervelocity impact of the ice particles on the honeycomb core structure,the numerical simulations of the hypervelocity impact were carried out using AUTODYN software to analyze the influence of the projectile diameter and the initial velocity on the velocity,mass and kinetic energy of the secondary debris-cloud. The results show that the axial and radial dimensions of the secondary debris-cloud are linearly related to the initial velocity of impact and the diameter of ice particles,and the empirical equations for the length and diameter of the debris-cloud were obtained based on the dimensional analysis. The velocity of the debris-cloud increases approximately linearly with axial position,but the diameter of the ice particles has a more significant effect on the axial velocity distribution of the secondary debris-cloud. When the initial velocity is lower than 6 km / s,the large mass debris is distributed in the head region of the debris-cloud; when the initial velocity is higher than 6 km / s,the large mass debris is distributed in the middle of the debris-cloud. When the initial velocity of the impact is constant,the larger mass debris is distributed in the head position of the debris-cloud,and the distribution pattern is less affected by the diameter of the ice particles. The kinetic energy of the debris-cloud has a similar axial distribution pattern with the mass.