WIT Press


Modeling Of Turbo-generator Rotors Using BEM

Price

Free (open access)

Paper DOI

10.2495/BE980561

Volume

21

Pages

10

Published

1998

Size

703 kb

Author(s)

Li Chen, Rajagopal Subbiah, Manoj Chopra, Alain Kassab & Faissal Moslehy

Abstract

Rotors are extremely important axisymmetric structures in power generating sets. Rotor design usually involves static and dynamic analyses that require evaluation of stresses and deflections and calculation of the rotor stiffness and the natural frequencies. The strain energy approach was reported to calculate the effective diameter of the rotor which in turn is used to provide accurate stiffness and natural frequency. In this paper, the authors apply direct boundary element method to model the rotor as generalized axisymmetric elastic body subjected to arbitrary loading conditions. The stresses and deflection of an arbitrary point in the body are obtained by employing Fourier series and the numerical elliptical integral techniques. The Monte Carlo method is used to evaluate the integral of the strain energy density over the entire body in order to o

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