With the aid of the static-geometric duality of Goldenveizer (1961), Cartesian tensor notation, and nondimensionalization, it is shown that the equations of linear shell theory of Sanders (1959) and Koiter (1959), when specialized to a circular cylindrical shell with stress-strain relations exhibiting full anisotropy (21 elastic-geometric constants), can be reduced, with no essential loss of accuracy, to two coupled fourth-order partial differential equations for a stress function F and a curvature function G. Auxiliary formulas for the midsurface displacement components are also given. For isotropic shells with uncoupled stress-strain relations, the equations reduce to a form given by Danielson and Simmonds (1969). The reduction is achieved by adding certain negligibly small terms to the given stress-strain relations. For orthotropic shells of mean radius R and thickness h with uncoupled stress-strain relations, it is shown that the very short decay length of O() and the very long decay length of O(R) (associated with separable solutions of the form e−Rz sin nθ) depend, respectively, to within a relative error of O(h/R), only on the products of different pairs of the eight possible elastic constants.
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September 1999
Technical Papers
Reduction of the Sanders-Koiter Equations for Fully Anisotropic Circular Cylindrical Shells to Two Coupled Equations for a Stress and a Curvature Function
T. J. McDevitt,
T. J. McDevitt
Department of Mathematics, Millersville University, Millersville, PA 17551
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J. G. Simmonds
J. G. Simmonds
Department of Civil Engineering, University of Virginia, Charlottesville, VA 22903
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T. J. McDevitt
Department of Mathematics, Millersville University, Millersville, PA 17551
J. G. Simmonds
Department of Civil Engineering, University of Virginia, Charlottesville, VA 22903
J. Appl. Mech. Sep 1999, 66(3): 593-597 (5 pages)
Published Online: September 1, 1999
Article history
Received:
December 23, 1998
Revised:
April 15, 1999
Online:
October 25, 2007
Citation
McDevitt, T. J., and Simmonds, J. G. (September 1, 1999). "Reduction of the Sanders-Koiter Equations for Fully Anisotropic Circular Cylindrical Shells to Two Coupled Equations for a Stress and a Curvature Function." ASME. J. Appl. Mech. September 1999; 66(3): 593–597. https://doi.org/10.1115/1.2791465
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