Constitutive Model for Timber Fracture under Tensile and Shear Loads

Abstract:

A 2D homogeneous orthotropic constitutive model of tensile and shear fracture in timber based on fixed smeared crack approach has been developed and implemented in ATENA^® finite element software. The model captures (1) elastic and inelastic behavior in small deformations range, (2) material orthotropy, both in linear and non-linear range, (3) cracking across or along fibers, and (4) behavior under unloading/reloading. In this contribution we present model validation through numerical simulations of compact tension shear (CTS) tests of Radiata Pine timber.

• Periodical: Applied Mechanics and Materials (Volume 784)
• Pages: 137-144
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.784.137
• Online since: August 2015
• Authors: Eliska Smidova*, Petr Kabele
• Keywords: 2D Constitutive Model, Fixed Smeared Crack Model, Orthotropic Elasticity, Orthotropic Fracture Criterion, Reloading, Timber, Traction-Separation Law, Unloading

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