Journal
WOOD SCIENCE AND TECHNOLOGY
Volume 53, Issue 2, Pages 447-467Publisher
SPRINGER
DOI: 10.1007/s00226-019-01082-3
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Funding
- Swiss National Science Foundation in the National Research Programme NRP 66 - Resource Wood [406640-140625]
- Federal Commission for Scholarships for Foreign Students
- Swiss Government
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Modifications alter hygro-mechanical properties of wood in non-trivial ways that depend on modification treatment and wood microstructure. Generic micromechanical models with modifications on the cellular scale of spruce are proposed and studied, such as partial and entire lumen filling with isotropic materials, as well as modification of S2-layer properties. Based on a hierarchical micromechanical model, hygro-mechanical response surfaces of the modified, orthotropic material are predicted. Simulation results are compared to experimental data. The findings can be used for optimizing modification treatments, as well as for calculating the behavior in graded situations, common to treatments with limited modification depth.
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