Theoretical Calculation and Experimental Analysis on Initial Shock Pressure of Borehole Wall under Axial Decoupled Charge

Table 5

Material model and state equation parameters of the explosive.

Density (kg/m^3)	Explosion velocity (m/s)	Detonation pressure (GPa)	A (GPa)	B (GPa)	R1	R2	ω	E0 (GPa)
1300	4000	5.2	211.4	0.182	4.2	0.9	0.15	4.192E6	1.0

Note: A, B, R₁, R₂, and ω are material model parameters; R₁ and R₂ are nondimensional parameters; ω is Grüneisen constant (change rate of pressure relative to internal energy under constant volume); E₀ is initial internal energy per unit volume of explosive; is relative volume.