Experimental Study on Low-Speed Dynamic Response of Combined Aluminum Honeycomb

By impacting experiments with low speed in an improved SHPB system,force was measured with a PVDF sensor and displacement was obtained by a laser system in an in-situ measurement way.As a result,curves between stress and strain were obtained.The properties of buffer and energy-absorbing of combined aluminum honeycomb was discussed using high-speed photography.The results show that the whole process can be divided into two stages:the inserting process between up-down honeycombs and the conjunctly crushing process;the joint happens in the strain of about 0.5.Besides,there are two peaks of about 40% in the effective energy absorption curves and the energy-absorbing property is better in the condition of dynamics.