Constitutive Modelling of Biaxially Stressed Wood for the Analysis of Layered Wooden Shells
نویسنده
چکیده
Abstract In this contribution a brief overview of the development of an orthotropic material model for the simulation of clear spruce wood under simultaneous biaxial in-plane stresses and transverse shear stresses is given. The model considers an initially linear elastic domain as well as hardening and softening behaviour at higher states of stress and strain, respectively. Combining the advantage of a smooth single-surface plasticity model with the identification of several modes of failure is the key to the novel mathematical formulation. The applicability of the new constitutive model will be demonstrated by means of a nonlinear finite element analysis of a layered cylindrical shell.
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