Best non-polynomial shear deformation theories for cross-ply single skin and sandwich shells

• Autores: Monge J.C., Mantari J.L.
• Formato: artículo
• Fecha de Publicación: 2020
• Institución: Consejo Nacional de Ciencia Tecnología e Innovación
• Repositorio: CONCYTEC-Institucional
• Lenguaje: inglés
• OAI Identifier: oai:repositorio.concytec.gob.pe:20.500.12390/2584
• Enlace del recurso: https://hdl.handle.net/20.500.12390/2584; https://doi.org/10.1016/j.engstruct.2019.109678
• Nivel de acceso: acceso abierto
• Materia: Shell; Axiomatic/Asymptotic; Best Theory Diagram; Carrera Unified Formulation (CUF); Laminated composite; http://purl.org/pe-repo/ocde/ford#1.01.01

This paper presents Best Theory Diagrams (BTDs) constructed from non-polynomial terms to identify best shell theories for bending analysis of cross-ply single skin and sandwich shell panels. This structure presents a constant radii of curvature. The shell theories are constructed using Axiomatic/Asymptotic Method (AAM). The different shell theories are described using the Carrera's Unified Formulation. The governing equations are derived from the Principle of Virtual Displacement (PVD). Navier-Type closed form solution is used for solving the bending problem of simply supported doubly curved shell panels subjected to bi-sinusoidal transverse pressure. The BTDs built from non-polynomial functions are compared with Maclaurin expansions. Spherical shell panels with different layer-configurations are investigated. The results demonstrated that the shell models obtained from the BTD using non-polynomial terms can improve the accuracy obtained from Maclaurin expansion for a given number of unknown variables of a displacement field. © 2019