Bending stiffness of unsymmetrical multilayered corrugated board: Influence of boundary conditions
[ 1 ] Instytut Analizy Konstrukcji, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ P ] employee
2023
scientific article
english
- Corrugated board
- Bending stiffness
- Multilayer unsymmetrical panels
- Boundary conditions
- Finite element analysis
EN In the laboratory practice, several standards for testing the bending stiffness of corrugated board are used. There are often cases of tests where the results depend on the way the sample is placed on the supports. The problem arises when the board is five-ply (with two corrugated layers with different corrugation heights) or when the board has asymmetrically selected papers on the flat layers. This article focuses on the problem related to boundary conditions, with particular attention to the local effects of the support of the sample. Because the cardboard layers, both flat and corrugated, have a small thickness, a slight deformation of the papers can always be observed at the point of contact between the sample and the support, which affects the readings of the measured stiffness. The paper presents theoretical and numerical analyzes showing how much the method of supporting the sample affects the measured bending stiffness of various samples. Numerical observations were compared with the results of analyzes presented by other scientists as well as with experimental results.
7611 - 7628
copyright
open journal
final published version
at the time of publication
100
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