The flow of forces through cellular materials

Details The flow of forces through cellular materials The flow of forces through cellular materials

2012-01-11

arxiv.org/abs/1201.2259v2

Physics

Condensed Matter

Materials Science

Scientific paper

Describing and measuring the elastic properties of cellular materials such as honeycombs and foams can be a difficult problem when the cell structure is disordered. This paper suggests that tracking the flow of forces through the material can help in visualizing and understanding how the geometry of the cell structure affects the elastic behaviour. The mean strain tensor for a sample of material can be calculated by summing over the force paths, weighted by the strengths of the paths. This method emphasizes the paths with the greatest stress, which can have the most dynamic effect. The path averaging technique reproduces previous expressions for the Poisson's ratio of regular honeycombs, but easily extends to disordered honeycombs and foams.

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