Voxel-based finite element modelling of wood elements based on spatial density and geometry data using computed tomography
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
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.
Details
Original language | English |
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Pages (from-to) | 742-753 |
Number of pages | 12 |
Journal | Holzforschung |
Volume | 75 |
Issue number | 8 |
Publication status | Published - 1 Aug 2021 |
Peer-reviewed | Yes |
External IDs
Scopus | 85099374710 |
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Keywords
Keywords
- computed tomography, finite element method, spatial distribution, voxel-based meshing, wood moulding