Analytical modeling and vibration analysis of partially cracked rectangular plates with different boundary conditions and loading
Israr, Asif and Cartmell, Matthew P. and Manoach, Emil and Trendafilova, Irina and Ostachowicz, Wieslaw and Krawczuk, Marek and Zak, Arkadiusz (2008) Analytical modeling and vibration analysis of partially cracked rectangular plates with different boundary conditions and loading. Journal of Applied Mechanics, 76 (1). pp. 11005-11013. ISSN 0021-8936 (https://doi.org/10.1115/1.2998755)
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Abstract
This study proposes an analytical model for vibrations in a cracked rectangular plate as one of the results from a program of research on vibration based damage detection in aircraft panel structures. This particular work considers an isotropic plate, typically made of aluminum, and containing a crack in the form of a continuous line with its center located at the center of the plate and parallel to one edge of the plate. The plate is subjected to a point load on its surface for three different possible boundary conditions, and one examined in detail. Galerkin's method is applied to reformulate the governing equation of the cracked plate into time dependent modal coordinates. Nonlinearity is introduced by appropriate formulations introduced by applying Berger's method. An approximate solution technique—the method of multiple scales—is applied to solve the nonlinear equation of the cracked plate. The results are presented in terms of natural frequency versus crack length and plate thickness, and the nonlinear amplitude response of the plate is calculated for one set of boundary conditions and three different load locations, over a practical range of external excitation frequencies.
ORCID iDs
Israr, Asif, Cartmell, Matthew P., Manoach, Emil, Trendafilova, Irina ORCID: https://orcid.org/0000-0003-1121-7718, Ostachowicz, Wieslaw, Krawczuk, Marek and Zak, Arkadiusz;-
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Item type: Article ID code: 6982 Dates: DateEvent31 October 2008PublishedSubjects: Technology > Mechanical engineering and machinery Department: Faculty of Engineering > Mechanical and Aerospace Engineering Depositing user: Strathprints Administrator Date deposited: 19 Sep 2008 Last modified: 21 Sep 2024 00:32 URI: https://strathprints.strath.ac.uk/id/eprint/6982