The springback effect of materials is well known but there are no reliable formulas to predict it (Jones, 2018). Mostly a FEM model is used which complicates the solution for simple forms. Wood lamellas can be bent and laminated into quite complex forms. The simplest form would be the shape of an arc. Gluing a number of wooden layers together the result differs from the original radius of the die. A preliminary study on beech wood was performed to investigate the springback effect as a function of the number of layers, the MOE of the sheet stack, the thickness of the lamella or/and the residual radius. Obtained correlations could be transferred into a formula to calculate the springback on wood.
Keywords: springback effect, wood lamellas, MoE (Modulus of Elasticity)
Authors
Moritz Sanne
University for Sustainable Developement, Eberswalde
Sebastian Makowski
Gudrun Ahn-Ercan
Alexander Pfriem
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