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A granular material with a negative Poisson’s ratio
Mechanics of Materials, 2010Abstract An auxetic material is one with a negative Poisson’s ratio and has the property of widening when stretched or narrowing when compressed in contrast to conventional materials. Typical auxetic materials include modified polymeric foams ( Lakes, 1987 ), regular honeycombs, polypropylene fibres and certain crystal structures.
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Cuts with a negative Poisson’s ratio in Si
The Journal of the Acoustical Society of America, 2001Poisson’s ratio is the ratio of lateral strain in the direction n to the longitudinal strain during the stretching of a cylindrical rod along rod axis m. The Poisson ratio is a constant in an isotropic solid. The Poisson ratio of an anisotropic solid depends on directions m and n.
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Negative Poisson's ratio and stress distribution
The Proceedings of Mechanical Engineering Congress, Japan, 2018Mamoru HIMENO +3 more
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Hierarchical graphene fibers with negative Poisson\u2019s ratio
GRAPHEL, 2012Y. Sun, Pugno, Nicola
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