Materials with negative Poisson ’s ratio are peculiar in that they expand laterally when stretched. Examples of such type of behavior have been discovered with foams by Lakes (1987); however, it is only recently that isotropic materials with negative Poisson’s ratio have been shown by Milton (1992) to exist within the framework of classical theory of elasticity. In this Note, we demonstrate qualitatively that a composite material with a reentrant microstructure can also have a negative Poisson’s ratio, even though the composite may be isotropic owing to a completely random distribution of the microstructure.
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Materials With Negative Poisson’s Ratio: A Qualitative Microstructural Model
Department of Mechanical Engineering, University of Sydney, NSW 2006, Australia
B. L. Karihaloo
School of Civil and Mining Engineering, University of Sydney, NSW 2006, Australia
Phan-Thien, N., and Karihaloo, B. L. (December 1, 1994). "Materials With Negative Poisson’s Ratio: A Qualitative Microstructural Model." ASME. J. Appl. Mech. December 1994; 61(4): 1001–1004. https://doi.org/10.1115/1.2901547
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