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Experimental evaluation of micromorphic elastic constants in foams and lattices

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Abstract

Micromorphic (microstructure) elastic constants are considered within the context of experimental results for foams and rib lattices and of subsets such as Cosserat elasticity, void elasticity and reduced micromorphic elasticity. Experimentally, longitudinal wave dispersion and cutoff frequencies reveal several of the micromorphic b coefficients. In static experiments, no size effects are evident in compression for the materials studied. The corresponding micromorphic a coefficients are not distinguishable from zero. By contrast, Cosserat effects are pronounced in these materials.

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  1. University of Wisconsin–Madison, Madison, USA

    R. S. Lakes

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Lakes, R.S. Experimental evaluation of micromorphic elastic constants in foams and lattices. Z. Angew. Math. Phys. 74, 31 (2023). https://doi.org/10.1007/s00033-022-01923-5

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  • DOI: https://doi.org/10.1007/s00033-022-01923-5

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