Nonlinear Dynamic Constitutive Model of Frozen Sandstone Based on Weibull Distribution

Table 2

Fitting parameters for sandstone with different strain rates at different temperatures.

(°C)	(S^−1)	(MPa)			(MPa)	(MPa)	(S)		(10^−3)
20	105.89	3538.3	−841754.18	−6.61E7	36687.22	1065.138	0.031	0.967	0.004
						0.006	0.039	0.102	0.043
	154.88					18.781	0.042	0.228	0.053
						2.85E−4	0.048	0.083	0.039
−10	138.5	1557.32	−37815.56	−8.40E7	32020.66	212.34	0.069	0.535	0.023
						0.447	0.071	0.177	0.045
	210					0.208	0.076	0.177	0.041
						0.263	0.067	0.162	0.045
−20	135.48	585.696	—	—	36559.13	0.004	0.063	−0.017	0.088
	224.15					5.467E−4	0.117	0.019	0.057
−30	158.02	1138.09	—	—	32496.81	−2.81E−10	0.121	0.377	0.006
	189.21					−3.95E−5	0.131	0.024	0.055