Wood Science and Technology

, Volume 44, Issue 2, pp 205–223 | Cite as

Development of high-performance strand boards: multiscale modeling of anisotropic elasticity

  • Reinhard StürzenbecherEmail author
  • Karin Hofstetter
  • Gerhard Schickhofer
  • Josef Eberhardsteiner


The interrelationships between microstructural characteristics and anisotropic elastic properties of strand-based engineered wood products are highly relevant in order to produce custom-designed strand products with tailored properties. A model providing a link between these characteristics and the resulting elastic behavior of the strand products is a very valuable tool to study these relationships. Here, the development, the experimental validation, and several applications of a multiscale model for strand products are presented. In a first homogenization step, the elastic properties of homogeneous strand boards are estimated by means of continuum micromechanics from strand shape, strand orientation, elastic properties of the used raw material, and mean board density. In a second homogenization step, the effective stiffness of multi-layer strand boards is determined by means of lamination theory, where the vertical density profile and different layer assemblies are taken into account. On the whole, this model enables to predict the macroscopic mechanical performance of strand-based panels from microscopic mechanical and morphological characteristics and, thus, constitutes a valuable tool for product development and optimization.


Slenderness Ratio Layer Assembly Board Density Homogenization Step Strand Orientation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Funding by the Federal Ministry of Economics and Labor of the Republic of Austria (BMWA), by the Styrian Business Promotion Agency (SFG), by the federal State of Styria and by the municipality of Graz is gratefully acknowledged.


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Reinhard Stürzenbecher
    • 1
    • 2
    Email author
  • Karin Hofstetter
    • 1
  • Gerhard Schickhofer
    • 2
    • 3
  • Josef Eberhardsteiner
    • 1
  1. 1.Institute for Mechanics of Materials and StructuresVienna University of TechnologyViennaAustria
  2. 2.holz.bau.forschungs GmbHGrazAustria
  3. 3.Institute for Timber Engineering and Wood TechnologyGraz University of TechnologyGrazAustria

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