Transient Analysis and Safety Assessment of Turbofan Engine Structures during Bird Ingestion

Table 3

Major parameters of Johnson-Cook material constitutive model.

Parameter	Value
	TC4 titanium alloy	2A70 aluminum alloy	GH4169 super-alloy
Young’s modulus
Poisson’s ratio
Density
Melting temperature
Heat capacity
	1089 MPa	364 MPa	1350 MPa
	1083 MPa	436 MPa	1139 MPa
	0.014	0.0054	0.0134
	1.1	1.398	1.03
	0.93	0.559	0.6522
	-0.09	0.14	0.11
	0.27	0.136	0.35
	0.48	-2.02	4.8
	0.014	0.0272	0
	3.87	0	0