Kriging Metamodeling in Rotordynamics: Application for Predicting Critical Speeds and Vibrations of a Flexible Rotor

Table 2

Value of the physical parameters for the four disks.

Notation	Description	Value
	Outer radius of the 1st disk
	Thickness of the 1st disk
	Outer radius of 2nd the disk
	Thickness of the 2nd disk
	Outer radius of 3rd the disk
	Thickness of the 3rd disk
	Outer radius of 4th the disk
	Thickness of 4th the disk
	Young’s modulus of elasticity	N⋅m^−2
	Density	kg⋅m^−3
	Mass unbalance for 1st disk
	Eccentricity of the mass unbalance for the 1st disk