Honeycomb core failure mechanism of CFRP/Nomex sandwich panel under multi-angle impact of hail ice

•Multi-angle impact of hail ice on carbon/Nomex sandwich panel was tested.•The impact velocities and angles affect the failure modes of the sandwich panel.•A mesoscale numerical modeling method of the nomex honeycomb was proposed.•The relationship of impact kinetic energy vs. dent at multi-angle impact was studied.