Energy absorption performance of thin-walled structures with triggering holes subjected to high-speed axial impact
The energy absorption performance of extruded aluminum tube with multi-cell profiles was evaluated in virtue of computer simulation. Several tube specimens, on which multiform triggering holes were introduced, were investigated via observation of deformation modes and repulsive forces. Strain rates of materials were taken into account in the present anlysis considering the high-speed impact. Comparison of different specimens show that multi-cell profiles can improve energy absorption performance and triggering holes can decrease crushing forces, and that the energy absorptions of the multi-cell profile tubes increase with the corner numbers in the constant profile areas.
国家科技期刊平台
NSTL
万方数据
维普
