COMPOSITE SHAFT ROTORDYNAMIC ANALYSIS USING A LAYERWISE THEORY

Authors: Singh S.P.1; Gupta K.2

Source: Journal of Sound and Vibration, Volume 191, Number 5, April 1996 , pp. 739-756(18)

Publisher: Academic Press

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Abstract:

Formulations are presented for the rotordynamic analysis of a composite rotor supported on general, eight coefficient bearings, obtained by using conventional equivalent modulus beam theory (EMBT), and a layerwise beam theory (LBT) derived from an existing layerwise shell theory, respectively. The formulations are based on the principle of virtual work. Rayleigh-Ritz displacements are used for deriving the solution equations. The results indicate that the difference between the two theories is not large, but for unsymmetric stacking sequences with bending stretching couplings present, the EMBT may result in inaccurate predictions of rotordynamic behaviour. Furthermore the layerwise theory produces a more realistic stress field in the laminate.

Language: English

Document Type: Research article

Affiliations: 1: Department of Mechanical Engineering, Regional Engineering College, Jalandhar, India 2: Department of Mechanical Engineering, Indian Institute of Technology, New Delhi, 190016, India

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