Energy Evolution Characteristics and Distribution Laws of Rock Materials under Triaxial Cyclic Loading and Unloading Compression

Table 3

Magnitude and percentage of the elastic energy density and the dissipated energy density around the rock failure stage.

σ3 (MPa)	Prepeak phase				At the stress peak				Postpeak phase
	(MJ/mm^3)		(MJ/mm^3)		(MJ/mm^3)		(MJ/mm^3)		(MJ/mm^3)		(MJ/mm^3)
	Value	%	Value	%	Value	%	Value	%	Value	%	Value	%
5	1.468	70.5	0.359	35.1	0.248	11.9	0.072	7.1	0.613	29.4	0.665	64.9
10	2.261	60.1	0.515	2.8	0.364	9.6	0.112	6.1	1.288	34.2	1.025	55.7
15	2.378	67.8	0.505	35.6	0.446	12.7	0.152	10.7	1.125	32.1	0.913	64.3
20	2.528	67.6	0.489	29.8	0.512	13.7	0.138	8.4	1.207	32.3	1.151	70.1
25	2.981	72.1	0.534	34.3	0.594	13.8	0.193	10.7	1.149	27.8	1.023	65.7
30	3.051	73.2	0.507	29.4	0.652	15.6	0.216	12.5	1.112	26.7	1.215	70.5