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The Effects of Nonlinear Asymmetric Supports on Turbine Engine Rotor Stability
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English
Abstract
A rotor-shaft system supported at one end by a spline coupling, and at the other end by a flexible bearing support having asymmetric and nonlinear characteristics is analyzed. The effects of nonlinearity and asymmetry in the flexible support, on the response to excitation from sliding friction in the spline coupling and rotor unbalance are investigated. The spline friction is represented as coulomb friction. As a result of the sliding friction excitation, a bounded nonsynchronous whirl is shown to occur at rotational speeds above the undamped natural frequency of the system.
Authors
Citation
Williams, R. and Trent, R., "The Effects of Nonlinear Asymmetric Supports on Turbine Engine Rotor Stability," SAE Technical Paper 700320, 1970, https://doi.org/10.4271/700320.Also In
References
- Gunter, E. J. “Dynamic Stability of Rotor Bearing Systems.”
- Alford, J. S. “Protecting Turbomachinery From Self-Excited Rotor Whirl.” ASME paper 64-WA/GTP-4
- Stoker, J. J. “Nonlinear Vibrations.” New York Interscience 1950