A High-Order Laminated Plate Theory with Improved In-Plane Responses.
Technical rept. Jul 84-Dec 85,
CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF APPLIED MECHANICS AND ENGINEERING SCIENCES
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In order to improve the accuracy of the in-plane responses of the shear deformable laminated composite plate theories, a new high-order laminated plate theory was developed based upon Reissners new mixed Variational Principle. To this end, a zig-zag shaped C sub 0 function and Legendre polynomials were introduced into the approximate in-plane displacement distributions across the plate thickness. The accuracy of the present theory was examined by applying it to the cylindrical bending problem of laminated plates which had been solved exactly by Pagano. A comparison with the exact solutions obtained for several symmetric and asymmetric cross-ply laminates indicates that the present theory accurately estimates in-plae responses, even for small span-to-thickness ratios. Keywords Laminated composite plates Shear deformations Composite materials. Author
- Laminates and Composite Materials