Research on Energy Dissipation Laws of Coal Crushing under the Impact Loads

Table 3

Absorption energy density and elastic latent energy density of coal specimens under impact loads.

Type	Specimen no.	Strain rate (s^−1)	Elastic latent density (J·m^−3)	Total absorption energy density (J·m^−3)	Ratio of elastic latent energy	Ratio of total absorption energy
Outburst coal	D1	73	7514.4	15164.3	0.53	0.65
	D2	78	10462.4	20737.6	0.73	0.90
	D3	81	10924.5	18650.5	0.77	0.81
	D4	101	5820.8	15484.3	0.35	0.67
	D5	115	28707.9	53413.8	2.02	2.31
	D6	129	21715.6	43215.1	1.52	1.87
	D7	160	24476.2	45100.0	1.72	1.95
	D8	174	36180.2	74123.9	2.54	3.20
	D9	193	43826.1	80153.5	3.08	3.46
	D10	214	40665.1	76023.1	2.85	3.28
	D11	219	51529.5	94275.0	3.62	4.07
	D12	221	47259.1	84470.3	3.32	3.65
	D13	268	96275.4	175133.1	6.76	7.56
	D14	279	107619.6	207698.7	7.56	8.97
Nonoutburst coal	D15	96	12354.2	30345.0	0.24	0.52
	D16	120	22291.0	45932.7	0.43	0.78
	D17	125	21409.3	46927.4	0.42	0.66
	D18	145	33695.8	59910.0	0.66	1.02
	D19	177	47037.3	90295.5	0.92	1.54
	D20	186	66647.1	123949.5	1.30	2.11