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Elastic Stability of Shallow Bending-Active Arches
https://orcid.org/http://orcid.org/0000-0002-3462-0203
https://orcid.org/http://orcid.org/0000-0002-2624-6944
https://orcid.org/http://orcid.org/0000-0003-1474-0176
We present a numerical and experimental investigation on the nonlinear equilibrium paths and elastic stability of pinned shallow arches realized by buckling a straight strut and then subjected to a transverse central point load. Finite element analyses were run to compare the behavior of arches with and without initial pre-stress condition. The effects of initial shallowness ratio, axial-to-bending stiffness ratio, and initial geometric imperfections on the equilibrium path and bifurcation points were investigated. As an experimental verification, laboratory tests were conducted on a pinned-pinned shallow arch obtained by buckling a thin, slender steel bar. Static and dynamic measurements were carried out to determine the load-displacement curve, the subsequent static deformed configurations, the frequency-load curves, and the buckling load. The acquired data were used for buckling load predictions and to obtain stability domains in terms of form factors and imperfection-sensitivity parameters.
Elastic Stability of Shallow Bending-Active Arches
https://orcid.org/http://orcid.org/0000-0002-3462-0203
https://orcid.org/http://orcid.org/0000-0002-2624-6944
https://orcid.org/http://orcid.org/0000-0003-1474-0176
We present a numerical and experimental investigation on the nonlinear equilibrium paths and elastic stability of pinned shallow arches realized by buckling a straight strut and then subjected to a transverse central point load. Finite element analyses were run to compare the behavior of arches with and without initial pre-stress condition. The effects of initial shallowness ratio, axial-to-bending stiffness ratio, and initial geometric imperfections on the equilibrium path and bifurcation points were investigated. As an experimental verification, laboratory tests were conducted on a pinned-pinned shallow arch obtained by buckling a thin, slender steel bar. Static and dynamic measurements were carried out to determine the load-displacement curve, the subsequent static deformed configurations, the frequency-load curves, and the buckling load. The acquired data were used for buckling load predictions and to obtain stability domains in terms of form factors and imperfection-sensitivity parameters.
Elastic Stability of Shallow Bending-Active Arches
https://orcid.org/http://orcid.org/0000-0002-3462-0203
https://orcid.org/http://orcid.org/0000-0002-2624-6944
https://orcid.org/http://orcid.org/0000-0003-1474-0176
We present a numerical and experimental investigation on the nonlinear equilibrium paths and elastic stability of pinned shallow arches realized by buckling a straight strut and then subjected to a transverse central point load. Finite element analyses were run to compare the behavior of arches with and without initial pre-stress condition. The effects of initial shallowness ratio, axial-to-bending stiffness ratio, and initial geometric imperfections on the equilibrium path and bifurcation points were investigated. As an experimental verification, laboratory tests were conducted on a pinned-pinned shallow arch obtained by buckling a thin, slender steel bar. Static and dynamic measurements were carried out to determine the load-displacement curve, the subsequent static deformed configurations, the frequency-load curves, and the buckling load. The acquired data were used for buckling load predictions and to obtain stability domains in terms of form factors and imperfection-sensitivity parameters.
Elastic Stability of Shallow Bending-Active Arches
Lecture Notes in Civil Engineering
Gabriele, Stefano (editor) / Manuello Bertetto, Amedeo (editor) / Marmo, Francesco (editor) / Micheletti, Andrea (editor) / Piana, Gianfranco (author) / Bazzucchi, Fabio (author) / Manuello Bertetto, Amedeo (author)
Italian Workshop on Shell and Spatial Structures ; 2023 ; Turin, Italy
2023-10-31
10 pages
Article/Chapter (Book)
Electronic Resource
English
Snap-through Buckling , Elastic Stability , Nonlinear Bifurcation , Shallow Arch , Experimental Test , Finite Element Analysis Engineering , Light Construction, Steel Construction, Timber Construction , Materials Science, general , Structural Materials , Building Construction and Design , Building Materials
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