Original scientific paper

https://doi.org/10.17559/TV-20160210110559

Variation of Natural Frequencies by Circular Saw Blade Rotation

Nikola Anđelić ; Department of Mechanical Engineering, Faculty of Engineering Rijeka, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia
Sanjin Braut orcid.org/0000-0002-7565-2615 ; Department of Mechanical Engineering, Faculty of Engineering Rijeka, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia
Ana Pavlović ; Department of Industrial Engineering, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy

Abstract

In this paper the influence of circular saw blade rotation, slot shapes and number of slots on its natural frequencies and critical speeds is investigated. Firstly, the governing equation that describes the transverse vibrations of a stationary circular plate clamped at its centre is derived using Hamilton’s principle and based on Kirchhoff-Love plate theory and von Karman strain theory. The results are then compared with the ones obtained using FEM method and the FEM method is then applied to the real circular saw blade model. Finally, influence of slot shapes and number of slots on natural frequencies and critical speeds is investigated.

Keywords

backward traveling wave; Campbell diagram; forward travelling wave; natural frequencies

Hrčak ID:

193588

URI

https://hrcak.srce.hr/193588

Publication date:

10.2.2018.

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