A Study on the Split Effect of Projectile Debris on Honeycomb Core

Abstract

Abstract. Split appeared after initial interaction between honeycomb core and projectile debris when projectile hypervelocity impact on honeycomb sandwich panel. In order to investigate the split characteristics of projectile debris, a 3D simulation model of projectile hypervelocity impact on honeycomb sandwich panel was established. The simulation model was validated with experimental test by comparing numerical experimental damage performance, it reveal better agreement with both simulation and experiment. The simulation results of split phenomenon and the damage of honeycomb core and rear facesheet show that split phenomenon disappears with time going, but it has a close relation to initial bifurcation pattern of projectile. The energy change trend of honeycomb core also demonstrated that damage was obviously influenced by location of projectile impact point.

Numerical Simulation of Projectile Oblique Impact on Microspacecraft Structure

“…We have validated the accuracy of the simulation model by experiment as shown in Figure 3 [13] and Table 3. The experimental results coincide with the simulation results, which verified the correctness of the simulation model.…”