Structural Modifications for Torsional Vibration Control of Shafting Systems Based on Torsional Receptances

Table 4

Obtained frequencies and required structural modifications.

			Parameter	Initial value	Obtained value
Moment of inertia [kg⋅m^2]				5.5	5.15
				3.5	2.65
Stiffness [kN⋅m]				400	800.01
	Desired mode number,		Goal	Proposed method	Error
[Hz]	1		30	30.01	0.01
	3		90	90.02	0.02
	1		−0.4765	−0.4766	0.0001
			−0.9432	−0.9431	−0.0001
	3		1	1	0
			−0.1513	−0.1512	−0.0001