Numerical Study on the Explosive Separation of Pyrotechnic Cutter

Table 2

Material parameters of 4340 stainless steel.

Shock EOS		Johnson–Cook strength model		Johnson–Cook failure model
(g/cm^3)	7.83	(GPa)	0.792	D1	0.05
	1.77	B (GPa)	0.51	D2	3.44
(m/s)	3382	n	0.26	D3	2.12
	1.812	C	0.014	D4	0.002
(K)	300	m	1.03	D5	0.61
(J/kg·K)	477	(K)	1793		Erosion criterion
		(1) s	1.0	Type	Failure