Stability Tests of Sandwich Composite Elastica Arches
Publication: Journal of Structural Engineering
Volume 128, Issue 5
Abstract
A novel sandwich elastica arch is made by buckling its individual layers into shape, and then laminating them in place. One single-layer arch and four prototype sandwich composite arches with aluminum skins and discrete cores of balsa or oak wood were tested. Sandwich composite section resulted in a significant increase in the strength-to-weight ratio of the arch. The spacing of the core and the interlaminar shear strength are shown to affect the mode of failure and capacity of the arch. Test results and the relative ease of fabrication suggest that this novel arch can be used as a skeletal system for large clear-span domes.
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References
Amde, A. M., and Huddleston, J. V.(1977). “Three-dimensional stability of prestressed arches.” J. Eng. Mech., 103(5), 855–867.
Chini, S. A., and Amde, A. M.(1988). “Effect of prestressing on elastica arches.” J. Eng. Mech., 114(10), 1788–1797.
Mirmiran, A., and Amde, A. M.(1995). “Effects of fabrication process on prestressed composite arches.” J. Struct. Eng., 121(1), 124–131.
Ragavan, V., and Amde, A. M.(1999). “Nonlinear buckling and postbuckling of cable-stiffened prestressed domes.” J. Eng. Mech., 125(10), 1164–1172.
Ragavan, V., and Amde, A. M.(2000). “Nonlinear stability of ring-stiffened prestressed domes.” J. Struct. Eng., 126(7), 838–843.
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Information
Published In
Journal of Structural Engineering
Volume 128 • Issue 5 • May 2002
Pages: 683 - 686
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: May 9, 2000
Accepted: Aug 9, 2001
Published online: Apr 15, 2002
Published in print: May 2002
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