Voxel-based finite element modelling of wood elements based on spatial density and geometry data using computed tomography
-
Jens U. Hartig
,
André Bieberle
,
Chris Engmann
Abstract
In this paper, voxel-based finite element modelling based on spatial geometry and density data is applied to simulate the detailed stress and strain distribution in a large wood element. As example, a moulded wooden tube with a length of 3 m and a diameter of 0.3 m is examined. Gamma-ray computed tomography is used to obtain both, its actual geometric shape and spatial density distribution. Correlation functions (R2 ≈ 0.6) between density and elastic material properties are experimentally determined and serve as link for defining the non-uniform distribution of the material properties in the finite element model. Considering the geometric imperfections and spatial variation of the material properties, a detailed analysis of the stress and strain distribution of a wood element is performed. Additionally, a non-destructive axial compression test is applied on the wooden tube to analyse the load-bearing behaviour. By means of digital image correlation, the deformation of the surface is obtained, which also serves for validation of the finite element model in terms of strain distributions.
Acknowledgements
Some of the simulations were performed on the Bull HPC-Cluster (HRSK-II) at the Centre for Information Services and High Performance Computing (ZIH) of Technische Universität Dresden.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original articles
- Genetic variation of microfibril angle and its relationship with solid wood and pulpwood traits in two progeny trials of Eucalyptus nitens in Tasmania
- A novel fractal model for the prediction and analysis of the equivalent thermal conductivity in wood
- Oak wood drying: precipitation of crystalline ellagic acid leads to discoloration
- Thermal modification kinetics and chemistry of poplar wood in dry and saturated steam media
- Moisture-dependency of the fracture energy of wood: a comparison of unmodified and acetylated Scots pine and birch
- Voxel-based finite element modelling of wood elements based on spatial density and geometry data using computed tomography
- Micro/nano-structural evolution in spruce wood during soda pulping
- Characterization of a lignin-based gel responsive to aqueous binary solvents and pH
- Short note
- Reactivity of a benzylic lignin-carbohydrate model compound during enzymatic dehydrogenative polymerisation of coniferyl alcohol
Artikel in diesem Heft
- Frontmatter
- Original articles
- Genetic variation of microfibril angle and its relationship with solid wood and pulpwood traits in two progeny trials of Eucalyptus nitens in Tasmania
- A novel fractal model for the prediction and analysis of the equivalent thermal conductivity in wood
- Oak wood drying: precipitation of crystalline ellagic acid leads to discoloration
- Thermal modification kinetics and chemistry of poplar wood in dry and saturated steam media
- Moisture-dependency of the fracture energy of wood: a comparison of unmodified and acetylated Scots pine and birch
- Voxel-based finite element modelling of wood elements based on spatial density and geometry data using computed tomography
- Micro/nano-structural evolution in spruce wood during soda pulping
- Characterization of a lignin-based gel responsive to aqueous binary solvents and pH
- Short note
- Reactivity of a benzylic lignin-carbohydrate model compound during enzymatic dehydrogenative polymerisation of coniferyl alcohol
