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Descripción
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| In this paper is presented the analytical 3D influence of all kind of knots, discerning the effect on the strength and the stress distribution of each geometric parameter separately. It was achieved parametrically by using a validated F.E. model which applies the flow-grain analogy in 3D. Size, position and conicity in face knots produce differences in M.O.R. about 64%, 69% and 300% respectively. In edge knots the stress orientation varies drastically from the face knots, and there may be changes on strength of 52% because of the size, and 24% due to the location. Inclination in face knots causes a transition from the face stress configuration to the typical stress distribution on edges, and can improve 60% the M.O.R. When there is global grain deviation in both faces and edges the strength can be reduced 52%, but if it is only in faces or edges it changes 42% and 26% respectively. The effect of eccentricity in flexural resistance was only 9%, but the influence of the rotation of the defects reached 44%. | |
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Internacional
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Si |
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Nombre congreso
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12th World Conference on Timber Engineering |
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Tipo de participación
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960 |
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Lugar del congreso
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Auckland, Nueva Zelanda |
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Revisores
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ISBN o ISSN
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DOI
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Fecha inicio congreso
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16/07/2012 |
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Fecha fin congreso
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19/07/2012 |
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Desde la página
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1 |
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Hasta la página
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2 |
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Título de las actas
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Proceedings of 12th World Conference on Timber Engineering |