This paper describes the analogue computer simulation of a complete rotor and bearing system. The physical equations of motion of the rotor with its shaft are derived in rotating coordinates and those of the bearings in stationary coordinates. The system is modelled to have four degrees of freedom, taking into consideration the flexibility, damping, and cross- coupling of the hydrodynamic bearings. The model can be reduced to two degrees of freedom by assuming that the rotor is rigidly supported. The simulation of a transverse fatigue crack in the rotor shaft is pre sented and its effect on the dynamic response of the system is briefly examined.
Charlesworth, A.S. Fletcher, J.R.Systematic Analogue Computer ProgrammingPitman Publishing CompanyLondon19742nd ed
2.
Henry, T.A.Okah-Avae, B.E.Vibrations in Cracked Shafts Conference on Vibrations in Rotating Machinery Paper C162/76Institute of Mechanical EngineersLondon September 1976
3.
Henry, T.A.Okah-Avae, B.E.Vibrations of a Cracked Shaft Rotating in Oil-Film Bearings In press
4.
Okah-Avae, B.E.The Vibrations of a Cracked Rotating Shaft Unpublished PhD thesisUniversity of Manchester May 1977
