Study on Dynamic Behavior and Energy Dissipation of Rock considering Initial Damage Effect

Table 3

Dynamic mechanical parameters of sandstone with different damage degrees.

No.	Ed (GPa)		σd (MPa)		εd (%)
	Single specimen	Average	Single specimen	Average	Single specimen	Average
X0-1	57.68	59.17	93.57	90.53	1.09	1.18
X0-2	61.65		86.48		1.18
X0-3	58.17		91.53		1.28
X5-1	52.78	54.42	84.94	82.62	1.21	1.27
X5-2	57.17		79.84		1.34
X5-3	53.31		83.09		1.27
X10-1	43.31	45.57	63.75	65.38	1.68	1.63
X10-2	46.76		66.01		1.56
X10-3	46.63		66.38		1.64
X20-1	29.03	31.95	44.87	44.41	1.76	1.76
X20-2	35.49		43.22		1.71
X20-3	31.32		45.15		1.82
X30-1	28.49	27.15	43.89	40.50	1.94	1.93
X30-2	25.34		41.94		1.86
X30-3	27.63		35.67		1.98