Abstract |
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A special-purpose, semianalytical solution
method for determining the stress and deformation fields in
a thin, laminated-composite cylindrical shell with an elliptical
cutout is presented. The analysis includes the effects of
cutout size, shape, and orientation; nonuniform wall thickness;
oval cross-sectional eccentricity; and loading conditions. The
loading conditions include uniform tension, uniform torsion, and
pure bending. The analysis approach is based on the principle of
stationary potential energy and uses Lagrange multipliers to
relax the kinematic admissibility requirements on the
displacement representations through the use of idealized elastic
edge restraints. Specifying appropriate stiffness values
for the elastic extensional and rotational edge restraints
(springs) allows the imposition of the kinematic boundary
conditions in an indirect manner, which enables the use of a
broader set of functions for representing the displacement
fields. Selected results of parametric studies are
presented for several geometric parameters that demonstrate that
this analysis approach is a powerful means for developing design
criteria for laminated-composite shells.
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Keywords
cylindrical, composite, cutout, stress
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Authors
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