Artículos en revistas:
Prediction of bendig load capacity of timber beams by finite element method simulation of knots and grain deviation
Prediction of bendig load capacity of timber beams by finite element method simulation of knots and grain deviation
Año:2011
Áreas de investigación
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Ingenierías
Datos
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Descripción
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| A finite element model was used to simulate timber beams with defects and predict their maximum load in bending. Taking into account the elastoplastic constitutive law of timber, the prediction of fracture load gives information about the mechanisms of timber failure, particularly with regard to the influence of knots, and their local grain deviation, on the fracture.Afinite element modelwasconstructed using theANSYSelement Plane42 in a plane stress 2D-analysis, which equates thickness to the width of the section to create a mesh which is as uniform as possible. Three sub-models reproduced the bending test according to UNE EN 408: i) timber with holes caused by knots; ii) timber with adherent knots which have structural continuity with the rest of the beam material; iii) timber with knots but with only partial contact between knot and beam which was artificially simulated by means of contact springs between the two materials. The model was validated using ten 45 _ 145 _ 3000mm beams of Pinus sylvestris L. which presented knots and grain deviation. The fracture stress data obtained was compared with the results of numerical simulations, resulting in an adjustment error less of than 9.7%. | |
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Internacional
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JCR del ISI
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Título de la revista
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Biosystems Engineering |
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ISSN
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1537-5110 |
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Factor de impacto JCR
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1,354 |
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Información de impacto
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Volumen
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109 |
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DOI
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10.1016/j.biosystemseng.2011.05.008 |
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Número de revista
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Desde la página
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241 |
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Hasta la página
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249 |
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Mes
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SIN MES |
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Ranking
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Agricultural Engineering: 5 de 12 |
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Participantes
- Autor: Vanessa Baño (CETEMAS)
- Autor: Francisco Arriaga Martitegui (UPM)
- Autor: Azahara Soilán (CIS MADEIRA)
- Autor: Manuel Guaita Fernández (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
- Creador: Grupo de Investigación: Construcción con Madera
- Departamento: Construcción y Vías Rurales
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