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Low Porosity Metallic Periodic Structures with Negative Poisson's Ratio
Author(s) -
Taylor Michael,
Francesconi Luca,
Gerendás Miklós,
Shanian Ali,
Carson Carl,
Bertoldi Katia
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201304464
Subject(s) - auxetics , porosity , poisson distribution , materials science , poisson's ratio , aspect ratio (aeronautics) , metal , simple (philosophy) , nanotechnology , composite material , mathematics , metallurgy , statistics , philosophy , epistemology
Auxetic behavior in low porosity metallic structures is demonstrated via a simple system of orthogonal elliptical voids. In this minimal 2D system, the Poisson's ratio can be effectively controlled by changing the aspect ratio of the voids. In this way, large negative values of Poisson's ratio can be achieved, indicating an effective strategy for designing auxetic structures with desired porosity.