Por favor, use este identificador para citar o enlazar este ítem: https://hdl.handle.net/20.500.12815/198
Título : Non-polynomial Zig-Zag and ESL shear deformation theory to study advanced composites
Autor: Mantari, J.L
Ramos, I.A
Monge, J.C.
Fecha de publicación : abr-2019
Resumen : The mechanical behavior of advanced composites can be modeled mathematically through unknown variables and Shear Strain Thickness Functions (SSTFs). Such SSTFs can be of polynomial or non-polynomial nature and some parameters of non-polynomial SSTFs can be optimized to get optimal results. In this paper, these parameters are called “r” and “s” and they are the argument of the trigonometric SSTFs introduced within the Carrera Unified Formulation (CUF). The Equivalent Single Layer (ESL) governing equations are obtained by employing the Principle of Virtual Displacement (PVD) and are solved using Navier method solution. Furthermore, trigonometric expansion with Murakami theory was implemented in order to reproduce the Zig-Zag effects which are important for multilayer structures. Several combinations of optimization parameters are evaluated and selected by different criteria of average error. Results of the present unified trigonometrical theory with CUF bases confirm that it is possible to improve the stress and displacement results through the thickness distribution of models with reduced unknown variables. Since the idea is to find a theory with reduced numbers of unknowns, the present method appears to be an appropriate technique to select a simple model. However these optimization parameters depend on the plate geometry and the order of expansion or unknown variables. So, the topic deserves further research.
Palabras clave : Composite materials
Plates (structural components)
Shear deformation
Shear strain
Carrera unified formulations
Equivalent single layers
Principle of virtual displacements
Shear deformation theory
Stress and displacements
Thickness distributions
Trigonometric functions
Zig-zag effects
Editorial : Elsevier
URI: https://hdl.handle.net/20.500.12815/198
DOI : https://doi.org/10.1016/j.cja.2019.02.001
Aparece en las colecciones: Artículos Científicos

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