OLLER  Sergio Horacio Cristobal
capítulos de libros
Formulation of a macro-element to analyze the mechanical behavior of general composite laminated plates.
Composite Laminates
Nova Science Publishers, Inc.
Año: 2010; p. 365 - 401
A general analytical numerical approach developed for the statical and dynamical analysis of unsymmetrically laminated plates of general quadrilateral shapes is presented in this chapter. An arbitrary quadrilateral flat laminate is mapped onto a square basic one, so that a unique macro-element is constructed for the whole plate. The Ritz method is applied to evaluate the governing equation in which all coupling effects, including those of bending and stretching, are contained. Kinematical assumptions of the Classical Lamination Plate Theory (CLPT) are considered in the equivalent single-layer laminate theories (ESL) context. The plate deflection is approximated by sets of beam characteristic orthogonal polynomials generated using the Gram-Schmidt procedure, always working in the generated macro-element. All possible transverse boundary conditions combining with the different in-plane constraints are considered in the analysis. The convergence studies and the comparisons with results available from the literature indicate that the approach presented is reliable and accurate. Sets of numerical results are given in tabular and graphical form illustrating the influence of different number of layers, fiber stacking sequences and edge conditions on the static deflection, natural frequencies and nodal patterns of a selection of ]laminated plates.