Analysis of Energy Dissipation Characteristics of Damaged Sandstone under Impact Load

Table 2

Dynamic mechanical parameters of sandstone with different damage degrees under impact load.

Actuation pressure (MPa)	Upper limit of stress (MPa)	(MPa)		(s^−1)
0.3	0	60.31	0.0400	32.14
	12.23	48.35	0.1025	42.36
	24.46	47.21	0.1234	45.05
	36.69	45.06	0.1482	54.64
	48.92	40.41	0.1710	63.52
0.4	0	62.49	0.0587	34.32
	12.23	51.43	0.1112	43.84
	24.46	49.01	0.1302	48.15
	36.69	47.59	0.1571	55.32
	48.92	41.78	0.1763	67.62
0.5	0	68.45	0.0913	35.32
	12.23	56.60	0.1114	45.45
	24.46	52.38	0.1330	49.22
	36.69	49.64	0.1613	55.81
	48.92	43.73	0.1913	68.22
0.6	0	76.03	0.1020	36.58
	12.23	59.65	0.1161	48.62
	24.46	56.87	0.1346	50.04
	36.69	52.86	0.1669	56.74
	48.92	46.07	0.2084	69.25