Elasticity Solution for Torsional Rigidity of Pretwisted Composite Strips
Publication: Journal of Engineering Mechanics
Volume 125, Issue 10
Abstract
The tension-torsion problem for pretwisted antisymmetric laminated composite strips is formulated without ad hoc shell-type assumptions. No restrictions regarding the thickness-to-width aspect ratio are made. The elasticity equations are derived first and solved exactly for the torsional rigidity of orthotropic strips. An approximate solution is derived for angle-ply laminates. The torsional rigidity predictions are compared with a shell-type closed-form solution and finite-element simulations. An iterative method, which allows for the development of closed-form one-term approximations in a number of boundary-value problems, is presented. The accuracy of the method is illustrated by comparison with exact solutions for two benchmark problems.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 125 • Issue 10 • October 1999
Pages: 1147 - 1153
History
Received: Feb 18, 1998
Published online: Oct 1, 1999
Published in print: Oct 1999
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