This paper describes the development of an efficient numerical integration algorithm for an orthotropic viscoelastic-mechanosorptive-plastic material model for wood, which was presented in Part I of this serial. This development utilizes both a semianalytical algorithm for the viscoelastic parts, and the return-mapping algorithm known from plasticity for the mechanosorptive-plastic part of the model. This yields an easily computed, closed form expression for the consistent tangent operator, and, as a consequence, a quadratic rate of asymptotic convergence on the global level of the incremental-iterative analysis by means of the FEM. To prove the practical applicability of the presented formulation, a numerical study of the so-called case-hardening phenomenon as observed on fast dried pine wood was performed. Selected results are presented and discussed.
|Journal||Journal of Engineering Mechanics|
|Publication status||Published - 2003|
|MoE publication type||A1 Journal article-refereed|
- wood drying
- structural engineering computing
- finite element analysis
Mackenzie-Helnwein, P., & Hanhijärvi, A. (2003). Computational analysis of quality reduction during drying of lumber due to irrecoverable deformation. II: Algorithmic aspects and practical application. Journal of Engineering Mechanics, 129(9), 1006-1016. https://doi.org/10.1061/(ASCE)0733-9399(2003)129:9(1006)