Parameter Identification and Linear Model of Giant Magnetostrictive Vibrator

Table 1

Main structural parameters of the GMV.

Item	Symbol	Unit	Value
Length of the GMM rod		mm	100
Diameter of GMM rod		mm	30
Young’s modulus of GMM rod		GPa	60
Stiffness coefficient of GMM rod		N/m	4.2 × 10^8
Damping coefficient of GMM rod		N·s/m	2.1 × 10^4
Density of GMM rod		kg/cm^3	9.25
Internal damping coefficient of GMM rod		N·s/m^2	3 × 10^6
Preload spring stiffness		N/m	3.5 × 10^5
Damping coefficient of output rod		N·s/m	2.2 × 10^5
Stiffness coefficient of output rod		N/m	1.8 × 10^9
Mass of output rod		kg	0.4
Mass of base		kg	6.8
Mass of rear		kg	11.4