This paper considers the exact Saint Venant solutions of the multi-layered composite plates, with the new methodology for theory of elasticity, which is based on the mixed variable method of the Hamiltonian system. The composite plate is composed of arbitrary number of layers of orthotropic materials. Via the method of separation of variables, the Saint Venant solutions are composed of all the corresponding Jordan normal solutions of the degenerated eigenvalue zero. These Jordan form solutions can be obtained through the integration of polynomials. The present paper gives new methodology for the solution of multi-layered plates.
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