Numerical Study of Separation Characteristics of Piston-Type Explosive Bolt

Table 2

Material parameters of 4340 stainless steel.

Shock EOS		Johnson–Cook strength model		Johnson–Cook failure model
(g/cm3)	7.83	(GPa)	0.792	D1	0.05
	1.77	(GPa)	0.51	D2	3.44
(m/s)	3382		0.26	D3	−2.12
	1.812		0.014	D4	0.002
(K)	300		1.03	D5	0.61
(J/kg·K)	477	(K)	1793	Erosion criterion
		(s^−1)	1.0	Type	Failure