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Numerical simulation and experimental bending behaviour of multi-layer sandwich structures

Arbaoui J., Schmitt Y., Pierrot J-L., Royer F-X.

Journal of Theoretical and Applied Mechanics

2014

Vol. 52 nr 2

431--442

In this paper, an experimental investigation, an analytical analysis and a numerical model of a typical four-point bending test on a polypropylene honeycomb multi-layer sandwich panel are proposed. The polypropylene honeycomb core is modelled as a single solid and multi-layer of equivalent material properties. Analytical and numerical (finite element) homogenization approaches are used to compute the effective properties of the single honeycomb core and analytical homogenization of the multi-layer one. The results obtained by numerical simu- lation (finite element) of four-point bending are compared with the experimental results of a polypropylene honeycomb core/composite facing multi-layer sandwich structures.