Abstract
An analytical procedure is developed to assess the stresses and deformations of filament-wound structures under loading conditions particular to centrifuge rotors and to assess the effects of wind angle variation through the centrifuge wall. This procedure is based on classical laminated plate theory and models both plane stress and plane strain states of a cylindrical shell comprising a number of cylindrical sublayers, each of which is cylindrically orthotropic. Available loading conditions are: radial body force due to rotation about the cylinder axis, internal and external pressures and axial force. The analysis is applied to three examples: a pressure vessel, a centrifuge rotor and a flywheel. It is shown that the benefit of wind angle variation is more significant for applications in which there is no axial loading to the cylindrical shell. It is also shown that, where axial loading is present, the benefits of wind angle variation are more significant under the last ply failure criterion than under the first ply failure criterion.
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