Buckling and Postbuckling of Prestressed Sandwich Arches
Publication: Journal of Structural Engineering
Volume 119, Issue 1
Abstract
A nonlinear finite element model is developed to investigate the stability behavior of a novel type of structure, namely prestressed sandwich arch. A prestressed sandwich arch is formed by buckling its individual layers into an arch shape and assembling them as a sandwich composite. A corotational formulation of a two‐node, three‐layer sandwich beam element is adopted. Isotropic material properties are assumed, and shear deformations of the core and facings are both included. The discontinuity in shear strains at the layer interface is accounted for by introducing a shear warpage angle. A bilinear constitutive law is used that assumes a linear strain‐hardening behavior, once the elastic limit is reached for the corresponding layer. The effects of torsional warping, transverse normal deformations, and local modes of failure are excluded. Postbuckling analysis is performed by using the augmentation technique. The model has been tested for the classical problem of clamped‐hinged sandwich column. Numerical analyses show relatively high load‐carrying capacities for sandwich arches.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 119 • Issue 1 • January 1993
Pages: 262 - 278
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: May 17, 1991
Published online: Jan 1, 1993
Published in print: Jan 1993
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