engleski

Effect of Cell-Wall Angle on the Uniaxial Crushing Behaviour of Paper Hexagonal Honycombs

The following factors: paper mass, apparent density as well as cell shape and dimensions exert a significant impact on the stiffness and strength of cell panels. In the available literature on the subject, there are no papers reporting research results on stability of paper honeycombs depending on the cell-wall inclination angle and apparent density of honeycomb. The objective of this research project was to determine the influence of the cell-wall angle of irregular hexagonal cells as well as their apparent density on the stability of paper honeycomb. The investigations were realised by carrying out experimental tests and then comparing the obtained results with the results of numerical calculations. Empirical tests and then comparing the obtained results with the results of numerical calculations. Empirical tests were conducted using cores made from paper honeycombs of hexagonal cells differing with respect to wall inclination angles which ranged from 55, the value of the honeycomb critical force as well as its apparent density also increased. For the angle of 82, despite high apparent density, cell slenderness increased and its stability decreased. In addition, numerical models were elaborated sufficiently correctly ensuring convergence of the calculations with the results of experimental measurements.

paper honeycomb; cell-wall angle; crushinh; numerical analysis

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