THE EFFECT OF ORTHOGONAL LAMINATION IN PLYWOOD AND LVL ON THE PARTIAL COMPRESSIVE PERFORMANCE

Partial compressive performance of wood-based material needs to be obtained for structural design. Orthogonally laminated materials have been developed in recent years. An area in the additional length is and is not deformed under the partial compressive load perpendicular and parallel to grain, respectively. Therefore, the deformative constraint in the area occurs in the orthogonally laminated materials, which might improve the partial compressive performance. This effect was experimentally and quantitatively evaluated using veneer laminated specimens and theoretically evaluated via a mechanical model based on Pasternak model. Consequently, the improvement in the stiffness was demonstrated.