Method for Calculating the Bending Stiffness of Honeycomb Paperboard.

The article presents continued considerations presented in a prior publication on the development of a model for calculating the bending stiffness of cellular honeycomb paperboards, applying the strength properties of paper raw materials used for the production of paperboard and the geometric parameters of cellular board. The results of calculations obtained by using the analytical model presented in the prior publication were significantly overestimated in relation to the value obtained by measurements. The calculation error in relation to the measurement value for the tested group of paperboards in the case of bending stiffness in the machine direction was within the range from 23% to 116%, and the average error was 65%, while in the cross direction it was within the range from 2% to 54%, and the average error was 31%.

Bending Stiffness of Honeycomb Paperboard.

This article analyzes the influence of the initial deflection of the flat layers on the bending stiffness () of honeycomb paperboards and presents two methods for its calculation. Both methods allow for the determination of in the main directions in the plane of the paperboard, i.e.

Numerical and Experimental Study of Five-Layer Non-Symmetrical Paperboard Panel Stiffness.

This paper concerns the analysis of five-layer corrugated paperboard subjected to a four-point bending test. The segment of paperboard was tested to determine the bending stiffness. The investigations were conducted experimentally and numerically.

Flexural Damage of Honeycomb Paperboard-A Numerical and Experimental Study.

This paper presents an experimental and numerical analysis using the finite element method (FEM) of the bending of honeycomb-core panel. Segments of honeycomb paperboard of several thicknesses were subjected to four-point flexure tests to determine their bending stiffness and maximum load. Several mechanical properties of orthotropic materials were taken into account to account for the experimental results.

The Strength of Egg Trays under Compression: A Numerical and Experimental Study.

This work concerns the analysis of egg packages subjected to compression. Experimental investigations were carried out to determine the curves of compression and maximum loads. To compare packages accessible on the market, several different shapes of egg packages were tested after being conditioned in air with a relative humidity of 50%.

Calculation of Honeycomb Paperboard Resistance to Edge Crush Test.

The article presents the method of calculating the edge crush test ( of honeycomb paperboard. Calculations were made on the basis of mechanical properties of paper raw materials used for the production of cellular paperboard and geometrical parameters describing cellular paperboard. The presented method allows calculation of honeycomb paperboard in the main directions in the paperboard plane; i.