Open AccessCharacterization of Functionally Graded Timoshenko Beams with Variable Rotational Speed
Author(s) -
S. N. Padhi,
K.S. Sai Ram,
Trilochan Rout
Publication year - 2019
Publication title -
international journal of recent technology and engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-3878
DOI - 10.35940/ijrte.d8974.118419
Subject(s) - timoshenko beam theory , beam (structure) , vibration , rotational speed , materials science , functionally graded material , finite element method , mechanics , spinning , material properties , physics , structural engineering , classical mechanics , optics , composite material , acoustics , engineering
This paper investigates the free vibration characteristics and stability of a functionally graded Timoshenko beam spinning with variable angular speed. Material properties of the beam are assumed to be varied continuously along the thickness of the beam according to a power law and exponential law. The results show that increasing beam rotational speed increases fundamental mode frequency and the beam becomes more and more stable at higher speeds. This paper reports the dynamic behaviour of a rotating FGM beam subjected to axial periodic forces using the finite element method. The numerical results show good agreement with the reported beams models. Effects of static and time dependent components of axial loads on the stability of the FGM beam have been studied.