Influence of hygromechanical history on the longitudinal mechanosorptive creep of wood - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Holzforschung Année : 2012

Influence of hygromechanical history on the longitudinal mechanosorptive creep of wood

Résumé

An experiment was performed on Norway spruce to simplify our understanding of mechanosorptive creep. Two well-matched sets of specimens were subjected to the same humidity history but loaded in four-point bending at different times. One set was loaded dry, and thus experienced a considerable creep at first adsorption (the so-called ++ effect). The other set was then loaded wet and only exhibited, together with the dry-loaded set, the usual pattern of creep increase during drying (- effect) followed by a partial recovery during remoistening (+ effect). Both sets converged to the same response after a few cycles. The results confirm that a single type of mechanosorption, combined with strain-dependent hygroexpansion and humidity-dependent viscoelascity, is sufficient to account for all observed features of longitudinal creep of wood at ambient temperature.
Fichier principal
Vignette du fichier
Montero4_al.pdf (1.56 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00672336 , version 1 (21-02-2012)

Identifiants

Citer

Cédric Montero, Joseph Gril, Clémentine Legeas, David G. Hunt, Bruno Clair. Influence of hygromechanical history on the longitudinal mechanosorptive creep of wood. Holzforschung, 2012, 66, pp.757-764. ⟨10.1515/hf-2011-0174⟩. ⟨hal-00672336⟩
96 Consultations
435 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More