DYNAMICS OF FLEXIBLE ROTORS
Abstract
The determination of the critical speeds of a flexible rotor is usually carried out on the assumptions of negligible bearing mass and stiff ness. In this report the effect of bearing mass and stiffness on the natural frequencies of a uniform flexible shaft is found. Two specific cases are considered: the shaft of symmetric cross-section rotating in bearings of different horizontal and vertical stiffness, and the un symmetric shaft rotating in symmetrically stiff bearings. The frequency equations for various types of end constraints are solved by means of a simple graphical procedure. It is found that bearing mass and stiffness usually have considerable influence on all but the first or second critical speeds.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1963
- Accession Number
- AD0408397
Entities
People
- D. E. Dawson
- J. E. Panarelli
Organizations
- IIT Research Institute