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Journal of Vibration and Control
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FiniteElement Vibration Characteristics of Composite Hypar Shallow Shells with Various Edge Supports

S. Sahoo

D. Chakravorty

Department of Civil Engineering, Jadavpur University, Kolkata – 700 032, India

A review of the literature reveals that information regarding fundamental frequencies and mode shapes of shallow laminated composite hypar shells with practical civil engineering boundary conditions is not available. The present investigation aims to fill this gap by applying an eight-noded isoparametric shell element as the tool. Numerical experiments are carried out for different parametric variations including boundary conditions and stacking orders to obtain the fundamental frequencies and mode shapes. Some of the results are used for validating the correctness of the present approach by comparing with the existing benchmark, while the other results are studied meticulously to extract a set of meaningful conclusions regarding the free vibration characteristics of composite shallow hypar shells.

Key Words: Composite hypar shell • finite element analysis • practical boundary conditions • free vibration

Journal of Vibration and Control, Vol. 11, No. 10, 1291-1309 (2005)
DOI: 10.1177/1077546305057260
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