Mrówczyński, D., Pozorska, J., Garbowski, T., & Pozorski, Z. (2023). Bending Stiffness of Unsymmetrical Multilayered Corrugated Board: Influence of Boundary Conditions. BioResources, 18(4), 7611-7628.
Mrówczyński, D., Pozorska, J., Garbowski, T., & Pozorski, Z. (2023). Bending Stiffness of Unsymmetrical Multilayered Corrugated Board: Influence of Boundary Conditions. BioResources, 18(4), 7611-7628.
Mrówczyński, D., Pozorska, J., Garbowski, T., & Pozorski, Z. (2023). Bending Stiffness of Unsymmetrical Multilayered Corrugated Board: Influence of Boundary Conditions. BioResources, 18(4), 7611-7628.
Mrówczyński, D., Pozorska, J., Garbowski, T., & Pozorski, Z. (2023). Bending Stiffness of Unsymmetrical Multilayered Corrugated Board: Influence of Boundary Conditions. BioResources, 18(4), 7611-7628.
Abstract
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. In this article, we focus our attention on the problem related to boundary conditions, with particular attention to the local effects of the support of the sample. Since 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 also compared with the results of analyzes presented by other scientists as well as with experimental results.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
