Numerical simulation of honeycomb sandwich panel under hypervelocity impact of ice particle

With the orbital debris environment worsening,research on the hypervelocity im-pact phenomena of orbital debris attracts more and more interests of investigators all over the world.The density of some orbital debris is close to ice.Honeycomb sandwich panels are the im-portant component parts of spacecraft structures and protect equipments inside.Therefore,re-search on honeycomb sandwich panel under hypervelocity impact of ice particle is very imperative and necessary.In this study,we used numerical simulation method to study honeycomb sand-wich panels which are impacted by ice particles and evaluated their performance of resisting the hypervelocity impact of ice particles.The results show that ice particles can penetrate honeycomb sandwich panels.The ice particle of 1mm in diameter penetrated the honeycomb sandwich panel at the velocity of 12km/s;the ice particle of 2mm in diameter penetrated the honeycomb sand-wich panel at the velocity of 11km/s or 12km/s;the ice particle of 3mm in diameter penetrated the honeycomb sandwich panel at the velocity of 5km/s and above;the ice particle of 4mm or 5mm in diameter penetrated the honeycomb sandwich panel at the velocity of 3km/s and above. When the honeycomb sandwich panels are penetrated,a lot of debris dash out through the hole of the rare panel and will destroy equipments inside the spacecraft.Additionally,when the kinetic energy of ice particles are close,the diameters of the ice particles will affect the simulation results.