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Buckling and postbuckling of composite panels with cutouts subjected to combined edge shear and temperature changeThe results of a detailed study of the buckling and postbuckling responses of composite panels with central circular cutouts are presented. The panels are subjected to combined edge shear and temperature change. The panels are discretized by using a two-field degenerate solid element with each of the displacement components having a linear variation throughout the thickness of the panel. The fundamental unknowns consist of the average mechanical strains through the thickness and the displacement components. The effects of geometric nonlinearities and laminated anisotropic material behavior are included. The stability boundary, postbuckling response and the hierarchical sensitivity coefficients are evaluated. The hierarchical sensitivity coefficients measure the sensitivity of the buckling and postbuckling responses to variations in the panel stiffnesses, and the material properties of both the individual layers and the constituents (fibers and matrix). Numerical results are presented for composite panels with central circular cutouts subjected to combined edge shear and temperature change, showing the effects of variations in the hole diameter, laminate stacking sequence and fiber orientation, on the stability boundary and postbuckling response and their sensitivity to changes in the various panel parameters.
Document ID
19950019860
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Noor, Ahmed K.
(Virginia Univ. Hampton, VA, United States)
Kim, Yong H.
(Virginia Univ. Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1995
Publication Information
Publication: Center for Computational Structures Technology
Subject Category
Structural Mechanics
Accession Number
95N26280
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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