A 3-node Shaft Element for Main Shaft Vibration FE Analysis

Bing Bai; Li Xing Zhang

doi:10.4028/www.scientific.net/AMM.444-445.141

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 444-445A 3-node Shaft Element for Main Shaft Vibration FE...

A 3-node Shaft Element for Main Shaft Vibration FE Analysis

Abstract:

To calculate the characteristics of the lateral vibration in the main shaft system of the hydro-turbine generating set, a three-node elastic shaft element was proposed. Its dynamic equation was derived and the interpolation function, translational inertia matrix, rotational inertia matrix, gyroscopic matrix and the stiffness matrix were obtained. Based on Matlab platform, a FEM program was developed for calculation and its correctness was verified through a numerical example. The study shows that, compared with the method using two-node shaft element, the results of the three-node shaft element are closer to the theoretical solution and the accuracy is higher.

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Periodical:

Applied Mechanics and Materials (Volumes 444-445)

Pages:

141-146

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.444-445.141

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Online since:

October 2013

Authors:

Bing Bai, Li Xing Zhang

Keywords:

Interpolation Function, Main Shaft System, Three-Node Shaft Element, Vibration, Whirl Frequency

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