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Artículo

A large deformation small strain formulation for the mechanics of geometrically exact thin-walled composite beams

Saravia, César MartínIcon
Fecha de publicación: 11/2014
Editorial: Elsevier
Revista: Thin-walled Structures
ISSN: 0263-8231
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Mecánica Aplicada

Resumen

This work presents a new formulation of the geometrically exact thin walled composite beam theory. The formulation assumes that the beam can undergo arbitrary kinematical changes while the strains remain small, thus compatibilizing the hypotheses of the strain measure and the constitutive law of the composite material. A key point of the formulation is the development of a pure small strain measure written solely in terms of scalar products of position and director vectors; the latter is accomplished through the obtention of a generalized small strain vector by decomposition of the deformation gradient. The resulting small strain measure is objective under rigid body motion. The finite element implementation of the proposed formulation is simpler than the finite strain theory implementation previously developed by the authors. Numerical experiments show that the present formulation is very accurate and computationally more efficient than the finite strain formulation, thus it is more convenient for most practical applications.
Palabras clave: Composite Beams , Finite Elements , Finite Rotations , Thin-Walled Beams , Wind Turbines
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/21681
URL: http://www.sciencedirect.com/science/article/pii/S0263823114001724
DOI: http://dx.doi.org/10.1016/j.tws.2014.05.014
Colecciones
Articulos(CCT - BAHIA BLANCA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - BAHIA BLANCA
Citación
Saravia, César Martín; A large deformation small strain formulation for the mechanics of geometrically exact thin-walled composite beams; Elsevier; Thin-walled Structures; 84; 11-2014; 443-451
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