Memorias de investigación
Artículos en revistas:
Prediction of bendig load capacity of timber beams by finite element method simulation of knots and grain deviation
Año:2011
Áreas de investigación
  • Ingenierías
Datos
Descripción
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%.
Internacional
Si
JCR del ISI
Si
Título de la revista
Biosystems Engineering
ISSN
1537-5110
Factor de impacto JCR
1,354
Información de impacto
Volumen
109
DOI
10.1016/j.biosystemseng.2011.05.008
Número de revista
Desde la página
241
Hasta la página
249
Mes
SIN MES
Ranking
Agricultural Engineering: 5 de 12
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Construcción con Madera
  • Departamento: Construcción y Vías Rurales