Mechanical Characteristics and Energy Evolution Laws for Red Bed Rock of Badong Formation under Different Stress Paths

Table 3

Test results of rock specimens under cyclic loading-unloading conditions.

Specimen no.	H (mm)	D (mm)	ρ (g/cm)	WV (km/s)	σ3 (MPa)	CT	σp (MPa)	ε1p	β
b2-4-1	96.88	49.53	2.68	5.27	4	7	203.0954	0.008077	76°40′
b2-4-2	97.21	49.46	2.67	5.49	8	6	249.0354	0.010038	81°10′
b2-4-3	97.24	49.41	2.61	4.96	16	7	221.2942	0.009788	78°50′

H is the height of the rock specimen; D is the diameter; ρ is the density; WV is the wave velocity; ε_1p is the axial strain at the peak point; CT is the cycle time.