Symmetric and unsymmetric buckling of circular arches

Authors:
R. W. Dickey and Joseph J. Roseman

Journal:
Quart. Appl. Math. **54** (1996), 759-775

MSC:
Primary 73H05; Secondary 73C50, 73G05, 73K05, 73V25

DOI:
https://doi.org/10.1090/qam/1417238

MathSciNet review:
MR1417238

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Abstract | References | Similar Articles | Additional Information

Abstract: A nonlinear geometrically exact inextensible elastica theory is used to derive a mathematical system which models a clamped circular arch of central angle under the action of a vertical force field of amplitude (e.g., gravity). The equilibria of the arch are studied for various values of . The existence of a solution of symmetric form for all fixed values of and is proved analytically by arguments based on variational principles. Numerical solutions are calculated for a variety of choices of , and in each case buckling (nonuniqueness) is shown to occur when is sufficiently large. In some cases, both symmetric and unsymmetric configurations are found, but each unsymmetric configuration obtained is found to be an unstable equilibrium, having energy greater than that of the symmetric configuration. Implications concerning the relative strengths and weaknesses of the various arches are discussed.

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Additional Information

DOI:
https://doi.org/10.1090/qam/1417238

Article copyright:
© Copyright 1996
American Mathematical Society