Free Vibrations of Circular Laminated Plates Containing Double Delaminations of Different Sizes

Free vibrations of the clamped circular laminated plates containing double disk-shaped delaminations of different sizes are analyzed on the basis of the theory of a small deflection of plates. Embedded circular delaminations are placed at the plate center and a crack model assuming the contact of th...

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Bibliographic Details
Published inTransactions of the Japan Society of Mechanical Engineers Series C Vol. 72; no. 719; pp. 2027 - 2033
Main Authors ARITOMI, Masao, IBARAKI, Yuichiro, ODA, Mikio, TOYA, Masayuki
Format Journal Article
LanguageEnglish
Japanese
Published The Japan Society of Mechanical Engineers 2006
Subjects
Circular Laminated Plate
Delamination
Free Vibration
Natural Frequency
Vibration of Continuous System
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Summary:Free vibrations of the clamped circular laminated plates containing double disk-shaped delaminations of different sizes are analyzed on the basis of the theory of a small deflection of plates. Embedded circular delaminations are placed at the plate center and a crack model assuming the contact of the two crack faces is then considered. Radial in-plane forces induced by bending in the parts of the plate above and below the delaminations are determined by modeling the crack part as two lapped discs hinged at the edge. Analyses and experiments are carried out for the effect of size difference of the delaminations on the natural frequencies. Theoretical and experimental results agree well, which validates the analytical models assumed in the present study.
ISSN:0387-5024
1884-8354
DOI:10.1299/kikaic.72.2027