Optimum Tuning of a Gyroscopic Vibration Absorber Using Coupled Gyroscopes for Vibration Control of a Vertical Cantilever Beam

Table 1

Physical properties of the system.

Symbol	Numerical values	Description
	210 × 10^9 N/m^2	Young’s modulus
	100 mm	Beam thickness
	150 mm	Beam width
	5 m	Length of the beam
	7850 kg/m^3	Density of the beam
	2000 kg	Tip mass
	0.2 m^2	Ratio of tip mass moment of inertia
	400 kg⋅m^2	Tip mass moment of inertia
	1.25 × 10^−5 m^4	Geometrical moment of inertia of beam
	9.81 m/s^2	Gravitational acceleration
	0.015 m^2	Area of cross section of beam
	N⋅m⋅s/rad	Damping coefficient
	N⋅m/rad	Stiffness of torsion spring
	50 kg	Disk mass of gyroscope
	0.2 m	Radius of disk
	1 kg⋅m^2	Rotary inertia of disk
	0.5 kg⋅m^2	Mass moment of inertia of disk
	0–30000 rpm	Rotating speed of disk