Experimental evaluation of micromorphic elastic constants in foams and lattices

被引：7
作者：
Lakes, R. S. [1 ]
机构：
[1] Univ Wisconsin Madison, Madison, WI 53706 USA
来源：
ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK | 2023年 / 74卷 / 01期
基金：
美国国家科学基金会;
关键词：
74A60; 74A35; 74Q15; DEFORMATION; DISPERSION; BEHAVIOR; RATIO;
D O I：
10.1007/s00033-022-01923-5
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
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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页数：11
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