Dynamic Mechanical Response and Dissipated Energy Analysis of Sandstone under Freeze-Thaw Cycles

Table 2

Bullet velocity and strain rate under different pressure.

Grouping and numbering of samples	Air pressure (MPa)	Bullet velocity (m/s)	Average speed (m/s)	Strain rate (s^-1)	Average strain rate (s^-1)
Y0-1	0.5	11.25	11.03	54.8	53.15
Y1-1		10.41		50.2
Y5-1		11.09		53.8
Y10-1		11.16		51.7
Y15-1		11.27		53.2
Y20-1		11.02		55.2
Y0-2	0.6	12.82	13.09	75.3	75.07
Y1-2		12.98		70.5
Y5-2		13.32		73.8
Y10-2		12.93		77.8
Y15-2		13.29		77.7
Y20-2		13.19		75.3
Y0-3	0.7	14.41	14.92	98.9	99.07
Y1-3		15.12		102.6
Y5-3		14.77		96.7
Y10-3		15.09		96.1
Y15-3		14.84		98.3
Y20-3		15.28		101.8