Effects of Groove Feature on Shear Behavior of Steel-Sand Interface

Table 4

Parameters of the interface mathematical model.

Interface	Normal stress (kPa)	Hyperbolic model		Gompertz-C model
		a	b	c	d
Int-A	50	0.0054	0.0467	−20.20	4.882
	100	0.0034	0.0229	−40.65	4.177
	150	0.0029	0.0139	−65.23	3.282
	200	0.0022	0.0112	−81.18	3.508
Int-D (0°)	50	0.0039	0.0431	−22.12	5.764
	100	0.0027	0.0207	−45.25	4.541
	150	0.0020	0.0132	−70.19	4.158
	200	0.0016	0.0100	−92.22	4.101
Int-D (45°)	50	0.0044	0.0400	−23.90	4.896
	100	0.0022	0.0189	−49.91	5.030
	150	0.0016	0.0126	−74.33	4.775
	200	0.0013	0.0096	−96.38	4.854
Int-D (90°)	50	0.0033	0.0368	−25.91	5.871
	100	0.0021	0.0168	−55.72	4.852
	150	0.0016	0.0115	−80.85	4.657
	200	0.0015	0.0091	−100.60	4.022