Numerical modelling of timber and timber joints

computational aspects

Journal article (2019)

Authors

Carmen Sandhaas Karlsruhe Institut für Technologie
Ani Khaloian Sarnaghi Holzforschung München
JWG van de Kuilen Bio-based Structures & Materials, Holzforschung München
Research Group
Bio-based Structures & Materials
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Published Date

2019

Language

English

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Research Group

Bio-based Structures & Materials

Abstract

Timber joints with their simultaneous ductile and brittle failure modes still pose a major challenge when it comes to modelling. Wood is heterogeneous and highly anisotropic. It shows ductile behaviour in compression and brittle behaviour in tension and shear. A 3D constitutive model for wood based on continuum damage mechanics was developed and implemented via a subroutine into a standard FE framework. Embedment and joint tests using three different wood species (spruce, beech and azobé) were carried out, and the results were compared with modelling outcomes. The failure modes could be identified, and the general shape of the load–displacement curves agreed with the experimental outcomes.

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