In this work an attempt has been made to developtheories for finite element static and dynamic stressanalysis tailored for use with composite layered plates andshells in this way it was hoped to provide accurate valuesof the stresses particularly transverse shear stressesthrough the thickness, and to perform accurate naturalfrequency analysis by including non-linear effects such ascentrifugal stiffening.Initial derivations were based upon first order facetshell element analysis and first order curved shell elementanalysis. Subsequently, derivations were produced forhigher order element analysis.A programming package has been developed based uponthe above derivations, and containing a banded solver aswell as a frontal solver, capable of analysing structuresbuild up from uniform or variable thickness layers and witha multiple number of layers having constant or variabledimension.Results obtained with the aid of the present packagehave been compared with results derived from experimentalwork as well as with results derived from availableanalytical solutions. Investigations have been carried outfor existing compressor blades, made of isotropic materialand layered composite material, respectively. The resultsobtained from the package have been compared with availableexperimental results produced by RR or carried out atCranfield. It has been shown that the above mentionedderivations produce comparable results and the package hasproved to be reliable and accurate.
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