A unified formulation of RMVT-based finite cylindrical layer methods for sandwich circular hollow cylinders with an embedded FGM layer

A unified formulation of finite cylindrical layer methods (FCLMs) based on the Reissner mixed variational theorem (RMVT) is developed for the quasi-three-dimensional (3D) analysis of simply-supported, multilayered composite cylinders and sandwich circular hollow cylinders with an embedded functional...

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Vydáno v:Composites. Part B, Engineering Ročník 43; číslo 8; s. 3318 - 3333
Hlavní autoři: Wu, Chih-Ping, Chang, Yu-Tsao
Médium: Journal Article
Jazyk:angličtina
Vydáno: Kidlington Elsevier Ltd 01.12.2012
Elsevier
Témata:
A. Laminates
Applied sciences
B. Elasticity
C. Computational modeling
C. Laminate mechanics
composite materials
Composites
Cylinders
elasticity (mechanics)
Exact sciences and technology
Forms of application and semi-finished materials
Laminates
mechanical loads
Physicochemistry of polymers
Polymer industry, paints, wood
Technology of polymers
B. Elasticity
C. Computational modeling
C. Laminate mechanics
A. Laminates
Cylinders
Laminate
Functionnally graded material
Sandwich structure
Multiple layer
Polymer
Modeling
Composite material
ISSN:1359-8368, 1879-1069
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Shrnutí:A unified formulation of finite cylindrical layer methods (FCLMs) based on the Reissner mixed variational theorem (RMVT) is developed for the quasi-three-dimensional (3D) analysis of simply-supported, multilayered composite cylinders and sandwich circular hollow cylinders with an embedded functionally graded material (FGM) cylindrical layer, subject to mechanical loads. The material properties of the FGM layer are assumed to obey an exponent-law varying exponentially with the thickness coordinate. In this formulation, the circular hollow cylinder is divided into a number of finite cylindrical layers, in which the trigonometric functions and Lagrange polynomials are used to interpolate the in- and out-of-surface variations of the field variables of each individual layer, respectively. Because an h-refinement instead of a p-refinement process is adopted to yield the convergent solutions in this work, the layerwise linear, quadratic or cubic function distribution through the thickness coordinate is assumed for the related field variables. The accuracy of the FCLMs developed in this article is assessed by comparing their solutions with the exact 3D ones available in the literature, and the convergence rate and possibility of numerical instability of these FCLMs are also investigated.
Bibliografie:http://dx.doi.org/10.1016/j.compositesb.2012.01.084
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ISSN:1359-8368
1879-1069
DOI:10.1016/j.compositesb.2012.01.084