Analytical Modeling of Rheological Postbuckling Behavior of Wood-Based Composite Panels Under Cyclic Hygro-Loading

Authors

  • Wook Kang
  • Byung-Dae Park
  • Woo Yang Chung
  • Hee Suk Jung

Keywords:

Wood-based composite panels, postbuckling, hardboard, creep, nonlinear plate, orthotropic material

Abstract

This study was conducted to develop analytical models to predict postbuckling behavior of woodbased composite panels under cyclic humidity conditions. Both the Rayleigh method and von Karman theory of nonlinear plate with imperfection were used to obtain a closed form solution to the hygrobuckling and postbuckling. In addition, mechano-sorptive creep effects were also taken into account for the derivation of analytical models. The closed-form solutions derived for both isotropic and orthotropic materials showed a good agreement with the experimental results in terms of the center deformation of hardboard, especially in the case of the edge movements. The unrecovery deformation was much greater at the first cycle and then decreased as the number of cyclic hygro-loading increased.

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Published

2007-06-05

Issue

Number 3 / July 2003

Section

Research Contributions

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