Poisson's ratio bounds in orthotropic materials. Application to natural composites: wood, bamboo and Arundo donax
Composites Part B: Engineering(2021)
Abstract
The paper discusses the restrictions the positive definite character of the strain energy imposes to the values of the Poisson's ratios in a linear elastic orthotropic constitutive law. By exploiting the reciprocity principle and the conservation of energy, non-trivial constraints arise, leading to a particularly expressive form of the domain of existence, named Tetrahedron-Ellipsoid locus, in the space of three independent Poisson's ratios.
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Key words
Anisotropy,Mechanical properties,Wood,Analytical modelling,Mechanical testing
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