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http://dx.doi.org/10.5139/JKSAS.2016.44.8.649

Dynamic Characteristics of Thick Rotating Composite Disks  

Koo, Kyo-Nam (Department of Aerospace Engineering, University of Ulsan)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.44, no.8, 2016 , pp. 649-656 More about this Journal
Abstract
Thick composite disks are utilized in the fast-rotating machines such as turbine disks, flywheels, and so on. The effects of rotating speed on the dynamic characteristics of thick composite disks are deeply studied in this paper. The dynamic governing equations of a rotating composite disk including transverse shear and rotary inertia are derived and then formulated into the finite element equation. Isotropic, circumferentially reinforced disk, and radially reinforced disk are selected for the numerical analysis. The inclusion of the transverse shear and rotary inertia into the governing equation of the rotating disks makes the natural frequency reduced as well as the critical speed. The present results show that the rotation of a thick disk may not reduce the effect of transverse shear and rotary inertia depending on anisotropy, thickness ratio and mode, unlike the results reported in other studies.
Keywords
Composite Disk; Finite Element Analysis; Natural Frequency; Rotary Inertia; Rotating Speed; Transverse Shear;
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Times Cited By KSCI : 2  (Citation Analysis)
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