Application of Improved Dynamic Substructure Finite Element Model-Based State-Space Techniques in Mistuned Blisks

Table 1

Parameters of mistuned turbine bladed disk.

Disk		Blades		Mistuned blisk
/×10^3 (kg/m^3)	8.653	/×10^3 (kg/m^3)	8.152		1046
/×10^11 (Pa)	1.857	/×10^11 (Pa)	1.7947		1050
	0.3126		0.3279	—	—
/×10^-5 (°C^-1)	1.417	/×10^-5 (°C^-1)	1.341	—	—
/W (m·°C)^-1	26.89	/W (m·°C)^-1	28.48	—	—

is the disk density; is the disk elasticity modulus; is the disk Poisson’s ratio; is the disk thermal expansion coefficient; is the disk thermal conductivity. is the blade density; is the blade elasticity modulus; is the blade Poisson’s ratio; is the blade thermal expansion coefficient; is the blade thermal conductivity; is the rotational speed of mistuned blisk; is the temperature of mistuned blisk.