标题：Vibraciones Transversales de una Placa Rectangular Elásticamente Restringida Contra Rotación en sus Cuatro Bordes y Sometida a una Distribución Lineal de Esfuerzos en Dos Bordes Opuestos
摘要：An approximate value of the fundamental frequency coefficient of the structural system described in the title is determined in the present paper using the optimized Raileigh-Ritz method. The displacement amplitude is expressed in terms of polynomial coordinate functions which satisfy, identically, the governing boundary conditions. Some errors existing in the technical literature when dealing with vibrating plates, subject to non-uniform in-plane stresses, are pointed out.
其他摘要：An approximate value of the fundamental frequency coefficient of the structural system described in the title is determined in the present paper using the optimized Raileigh-Ritz method. The displacement amplitude is expressed in terms of polynomial coordinate functions which satisfy, identically, the governing boundary conditions. Some errors existing in the technical literature when dealing with vibrating plates, subject to non-uniform in-plane stresses, are pointed out.
