Spreading of transverse compressive stresses in glued laminated timber

Abstract : This paper presents a new approach for understanding localized compressive behavior perpendicular to the grain based on beams subjected to three-point bending. It was intended to take into account the coupling between compressive stresses perpendicular to the grain due to support reactions and shear stresses. To validate this, model, results of compression tests have been examined. The digital image correlation (DIC) method has been applied in order to analyze the deformation fields in support areas. The tests allow confirming the presence of spreading effect in the vicinity of support areas according to the DIC method. An analytical formulation has therefore been proposed to quantify distribution versus increasing compressive strength perpendicular to the grain, including shear effects. A scale effect and support conditions have also been highlighted using three different geometries and two types of tests.
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European Journal of Wood and Wood Products, Springer Verlag, 2015, 73 (4), pp.475-484. 〈10.1007/s00107-015-0922-0〉
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Damien Lathuilliere, Octavian Pop, Laurent Bléron, Frédéric Dubois, Fazia Fouchal, et al.. Spreading of transverse compressive stresses in glued laminated timber. European Journal of Wood and Wood Products, Springer Verlag, 2015, 73 (4), pp.475-484. 〈10.1007/s00107-015-0922-0〉. 〈hal-01599802〉

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