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dc.contributor.author
Flores, Fernando Gabriel
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dc.contributor.author
Oñate, Eugenio
dc.date.available
2024-08-07T11:15:26Z
dc.date.issued
2005-02
dc.identifier.citation
Flores, Fernando Gabriel; Oñate, Eugenio; Improvements in the membrane behaviour of the three node rotation-free BST shell triangle using an assumed strain approach; Elsevier Science SA; Computer Methods in Applied Mechanics and Engineering; 194; 6-8; 2-2005; 907-932
dc.identifier.issn
0045-7825
dc.identifier.uri
http://hdl.handle.net/11336/241955
dc.description.abstract
In this paper an assumed strain approach is presented in order to improve the membrane behaviour of a thin shell triangular element. The so called Basic Shell Triangle (BST) has three nodes with only translational degrees of freedom and is based on a Total Lagrangian Formulation. As in the original BST element the curvatures are computed resorting to the surrounding elements (patch of four elements). Membrane strains are now also computed from the same patch of elements which leads to a non-conforming membrane behaviour. Despite this non-conformity the element passes the patch test. Large strain plasticity is considered using a logarithmic strain–stress pair. A plane stress behaviour with an additive decomposition of elastic and plastic strains is assumed. A hyperplastic law is considered for the elastic part while for the plastic part an anisotropic quadratic (Hill) yield function with non-linear isotropic hardening is adopted. The element, termed EBST, has been implemented in an explicit (hydro-)code adequate to simulate sheet-stamping processes and in an implicit static/dynamic code. Several examples are given showing the good performance of the enhanced rotation-free shell triangle.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science SA
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Finite elements
dc.subject
Shells
dc.subject
Rotation-free triangle
dc.subject
Large strains
dc.subject.classification
Mecánica Aplicada
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dc.subject.classification
Ingeniería Mecánica
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Improvements in the membrane behaviour of the three node rotation-free BST shell triangle using an assumed strain approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-06T11:17:15Z
dc.journal.volume
194
dc.journal.number
6-8
dc.journal.pagination
907-932
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Flores, Fernando Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba; Argentina
dc.description.fil
Fil: Oñate, Eugenio. Centre Internacional de Mètodes Numèrics en Enginyeria; España
dc.journal.title
Computer Methods in Applied Mechanics and Engineering
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S004578250400307X
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cma.2003.08.012
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