Vibrations of rotating nonuniform highly pretwisted asymmetrical thick beams with longitude-torsion-bending couplings
- Technical Univ. of Istanbul (Turkey). Faculty of Mechanical Engineering
Longitude-torsion-bending coupling effects on the vibration characteristics of the nonuniform highly pretwisted asymmetrical thick beams, have been investigated. The rotation speed of the beam, shear center effects, longitude-torsion-bending couplings, the warping of the beam cross sections, and beam root flexibility, have been incorporated into the analysis considering three dimensional motion of beam. Thin and Timoshenko thick beam theories have been used in the analysis. The relating coupling effects have been calculated by the finite element method and the numerical values obtained, have been compared with the available experimental values. It has been shown that in some of the practical cases; the longitudinal-torsional coupling can, considerably effect the bending, the torsional frequencies and is effective on the shear deformation frequencies by the shear center and torsion-bending couplings due to pretwist of beam as a new research aspect on the subject.
- OSTI ID:
- 382804
- Report Number(s):
- CONF-960154--; ISBN 0-9648731-8-4
- Country of Publication:
- United States
- Language:
- English
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