A geometrically defined stiffness contact for finite element models of wood joints
Keywords: 
Stiffness contact
Wood
Joint
Solid mechanics
Finite element model
Issue Date: 
2021
Publisher: 
Elsevier
ISSN: 
0141-0296
Note: 
This is an open access article under the CC BY-NC-ND license
Citation: 
Iraola-Sáenz, B.I. (Borja Iñaki); Cabrero-Ballarín, J.M. (José Manuel); Basterrechea-Arévalo, M.A. (Mar Ainhoa); et al. "A geometrically defined stiffness contact for finite element models of wood joints". Engineering Structures. (235), 2021, 112062
Abstract
Finite element models tend to overestimate the actual elastic response of structural timber connections. The paper shows how such overprediction relates to the modelling of the contact between fasteners and timber. The use of a control parameter called stiffness contact is proposed. After an experimental campaign, a method to determine it, based only on the geometry of a rectangular contact area, is proposed. The modeling adequacy is demonstrated by applying it to dowel embedment and moment resistant wood joint tests. The obtained results show good agreement with the experimental test series.

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