Experimental Study on the Impact Resistance of Closed-Cell Aluminum Foam Protective Materials to RC Piers under Lateral Impact

Table 6

Top displacement tests and comparison results.

Number of impacts	Impact velocity (m/s)	A			B
		Peak value of top displacement (mm)			Peak value of top displacement (mm)
		Z1	Z2	Z3	Z4	Z5	Z6
1	0.76	10.67	11.45	12.41	10.26	11.20	11.67
2	0.96	13.74	20.54	22.69	12.36	17.55	19.55
3	1.14	24.42	28.55	35.83	20.15	25.88	33.42
4	1.32	29.20	37.08	42.86	27.32	35.43	37.52
5	1.54	42.09	40.50	43.81	40.12	37.90	43.68
6	1.76	57.64	46.21	52.21	59.23	52.46	54.74
7	1.98	67.58	51.56	56.36	69.56	54.26	62.13
8	2.21	82.53	58.22	62.21	83.14	60.82	65.36
9	2.43	89.17	65.68	73.96	87.65	62.61	70.74