Study on Dynamic Mechanical Properties and Damage Evolution Model of Siltstone

Table 1

Results of the SHPB test on siltstone.

Wavelength (m)	Specimen number	Impact velocity (m·s^−1)	Strain rate (s^−1)	Peak stress (MPa)	Peak strain (×10^−3)	DIF
0.5	1-1	9.675	57.87	47.76	1.9	—
	1-2	11.607	79.45	65.77	2.8	—
	1-3	13.486	98.97	77.56	4.51	1.02
	1-4	15.515	127.69	113.58	6.13	1.49
	1-5	16.363	129.84	118.66	6.7	1.56
0.8	2-1	8.521	60.20	61.10	2.3	—
	2-2	10.551	85.06	66.89	3.7	0.88
	2-3	12.113	87.96	95.98	4.286	1.26
	2-4	14.609	120.18	116.80	6.753	1.53
	2-5	15.835	130.06	125.14	7.5	1.64
1.2	3-1	8.436	70.27	66.86	3.6	—
	3-2	9.592	79.88	72.44	4.41	0.95
	3-3	10.509	101.36	86.34	6.3	1.13
	3-4	11.500	110.54	103.46	7.65	1.36
	3-5	13.577	127.64	129.78	8.5	1.70
1.6	4-1	7.561	87.75	73.39	6.1	—
	4-2	9.674	110.35	106.67	8.32	1.40
	4-3	11.764	120.74	120.08	9.83	1.58
	4-4	12.586	137.64	128.96	11.67	1.69
	4-5	13.559	147.05	138.92	12.56	1.82
2.0	5-1	7.840	104.07	91.73	8.7	1.20
	5-2	9.741	116.07	116.57	9.95	1.53
	5-3	10.509	129.91	123.62	11.36	1.62
	5-4	11.465	139.32	134.30	12.44	1.76
	5-5	12.181	144.34	145.15	13.35	1.91