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Mechanics of Composite Materials
Erschienen in: Mechanics of Composite Materials 4/2017

05.09.2017

Modeling the Dynamic Response of a Carbon-Fiber-Reinforced Plate at Resonant Vibrations Considering the Internal Friction in the Material and the External Aerodynamic Damping

verfasst von: V. N. Paimushin, V. A. Firsov, V. M. Shishkin

Erschienen in: Mechanics of Composite Materials | Ausgabe 4/2017

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Abstract

The frequency dependence for the dynamic elastic modulus of a Porcher 3692 CFRP at frequencies to 112.5 Hz is obtained from an experimental study on damped flexural vibrations of vertical cantilevered test specimens. A finite-element technique is developed for modeling the dynamic response of a long cantilevered carbon-fiber-plastic plate at resonant flexural vibrations according to the first vibration mode with account of internal damping, aerodynamic drag forces, and the frequency-dependent dynamic elastic modulus of the material. The damping properties of the plate are determined by the logarithmic decrement, which depends on the vibration amplitude of its free edge. Numerical experiments were carried out, which confirmed the accuracy of the technique. It is shown that the logarithmic decrement of the plate in the range of medium and high vibration amplitudes depends mainly on the aerodynamic drag forces.
Nächster Artikel Vibration and Stability of Initially Stressed Hybrid Composite Plates in Hygrothermal Environments

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Metadaten
Titel
Modeling the Dynamic Response of a Carbon-Fiber-Reinforced Plate at Resonant Vibrations Considering the Internal Friction in the Material and the External Aerodynamic Damping
verfasst von
V. N. Paimushin
V. A. Firsov
V. M. Shishkin
Publikationsdatum
05.09.2017
Verlag
Springer US
Erschienen in
Mechanics of Composite Materials / Ausgabe 4/2017
Print ISSN: 0191-5665
Elektronische ISSN: 1573-8922
DOI
https://doi.org/10.1007/s11029-017-9673-9

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