Poisson's ratio

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Poisson's ratio

n
(General Physics) a measure of the elastic properties of a material expressed as the ratio of the fractional contraction in breadth to the fractional increase in length when the material is stretched. Symbol: μ or ν
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References in periodicals archive ?
An example of elastic contact between a real profile measured for a 50 mm diameter cylinder on a ground surface, both having modulii and Poisons ratio's equivalent to common steel, is shown in Fig 3.
[C.sub.12], [C.sub.13], [C.sub.23] are poisons ratio related stiffness elements.
[E.sub.1] = Young's modulus of the lamina in the fibre direction [E.sub.2] = [E.sub.3] = Young's modulus of the lamina in the transverse direction of the fibre [G.sub.12] = [G.sub.13] = Shear modulus in the longitudinal plane of the fibre [G.sub.23] = Shear modulus in the transverse plane of the fibre [v.sub.12] = [v.sub.13] = Poisons ratio in the longitudinal plane of the fibre [v.sub.23] = Poisons ratio in the transverse plane of the fibre [[alpha].sub.1] = Coefficient of thermal expansion in the fiber direction [[alpha].sub.2] = [[alpha].sub.3] = Coefficient of thermal expansion in the transverse direction of the fiber EL = Exact elasticity solution FE = Finite element solution