Prediction of Creep in Plywood Part I. Prediction Models for Creep in Plywood
Keywords:Plywood, creep, viscoelasticity, orthotropic elasticity, two-dimensional stress analysis, modeling, predicting
AbstractThree models for predicting creep in plywood from measured constituent properties were formulated using phenomenological linear viscoelastic theory. The three models represent a one-dimensional, quasi-elastic solution, a two-dimensional, quasi-elastic solution, and a two-dimensional, viscoelastic solution. In part II of this study, the models will be used to compute the principal components of the two-dimensional creep compliance tensor for plywood and will show that predictions of creep behavior based on all three solutions give similar results. The most accurate prediction of parallel and perpendicular creep was made with the one-dimensional model.
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