The dynamic stability of a rotating pre-twisted asymmetric cross-section Timoshenko beam subjected to lateral parametric excitation

Sabuncu, Mustafa; Evran, Kaan

doi:10.1016/j.ijmecsci.2006.01.019

Cited by 19 publications

(1 citation statement)

References 24 publications

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“…A model reduction approach was incorporated, and the accuracy of the reduced-order model was demonstrated by comparing the results with the full-order model. The dynamic stability of pre-twisted rotating beams modelled using the Timoshenko beam theory subjected to lateral excitation was studied by Sabuncu and Evran (2006). It was concluded that the pre-twist of the blade, the coupling and the shear coefficient can influence the dynamics of the beam.…”

Section: Introductionmentioning

confidence: 99%

Vibration analysis of rotating porous functionally graded material beams using exact formulation

Amoozgar

Gelman

2021

Journal of Vibration and Control

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In this article, the exact free vibration of porous functionally graded rotating blades is investigated. The nonlinear 3D dynamics of the blade is simulated using the geometrically exact fully intrinsic beam equations, and the corresponding cross-sectional properties of the FG beam are developed. The material properties of the functionally graded material blade are graded through the thickness using a power law distribution. Furthermore, it is assumed that due to the manufacturing process, a level of porosity exists in the material which in turn can affect the material properties of the blade. Two porosity models resembling the even and uneven distributions of porosity are considered. First, the obtained results for a functionally graded material rotating blade are compared with those reported in the literature, and a very good agreement is observed. Furthermore, the effect of various parameters on the vibration of the functionally graded material beam is investigated. It is obtained that the dynamics of the rotating blade is sensitive to the type of the porosity due to manufacturing flaws. Moreover, the numerical results show that the blade length to height ratio, power law index, rotating speed and porosity distribution model affect the dynamics of the beam significantly.

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Section: Introductionmentioning

confidence: 99%