Vibrations and stress analysis of rotating perforated beams by using finite elements method

M.A. Eltaher , Hanaa E. Abdelmoteleb , Ahmed Amin Daikh , Alaa. A. Abdelrahman

Abstract

This paper presents a computational finite element model to study and analyze vibrations and stresses of regularly perforated rotated beams considering different perforation configurations, for the first time. Both regular circular and squared perforation configurations are considered. The geometry of the perforated beam is modelled using shell finite elements. The finite elements equations of motion are derived for a straight perforated cantilevered beam with a symmetrical cross section. The proposed computational procedure is checked by comparing the obtained results with the available results in the literature and an excellent agreement is observed. The free vibration response, as well as stress distributions throughout the beam, are investigated. The obtained results reveal that the perforation configuration, as well as the rotating speed, have remarkable effects on the dynamics and stress distributions of the rotating perforated beams.

Key Words

finite element method; perforation configurations; perforated rotating beams; stress distribution; vibration behavior

Address

M.A. Eltaher — Department of Mechanical Engineering, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah, Saudi Arabia; Department of Mechanical Design & Production, Faculty of Engineering, Zagazig University, P.O. Box 44519, Zagazig, Egypt
Hanaa E. Abdelmoteleb — Department of Structural Engineering, Faculty of Engineering, Zagazig University, P.O. Box 44519, Zagazig, Egypt
Ahmed Amin Daikh — Laboratoire d'Etude des Structures et de Mécanique des Matériaux, Département de Génie Civil, Faculté des Sciences et de la Technologie, Université Mustapha Stambouli B.P. 305, R.P. 29000 Mascara, Algérie
Alaa. A. Abdelrahman — Department of Mechanical Design & Production, Faculty of Engineering, Zagazig University, P.O. Box 44519, Zagazig, Egypt

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