# 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 ?
Auxetic materials have a negative Poisson's ratio when stretched becoming thicker in a direction perpendicular to the direction of the applied force.
The observations of Dzegniuk (1970) and Sroka (1973) regarding the [mu] factor value we can infer that the corresponding range of values of the Poisson's ratio [nu] is:
In these tests, it can be observed that the viscous Poisson's ratio increases in compression, but remains virtually constant in tension.
The matrix will be assumed as an elastic material: Young's modulus [E.sub.M] =10 MPa and Poisson's ratio [v.sub.M] = 0.495.
Figure 5 shows the effect of the changes in Poisson's ratio [v.sup.s], on the radial displacement and the amplitude of the circumferential stress.
[15] believed that the plastic zone has a close relationship with Poisson's ratio of rock mass.
Evidently, the domain of definition of any single-valued continuous function that can be selected to approach the Poisson's ratio of this intermediate phase between fiber and matrix is the interval [[r.sub.f], [r.sub.i].
Based on strain measurements of the composites, Poisson's ratio of the composites was calculated.
Limits to Poisson's ratio in isotropic materials--general result for arbitrary deformation.
These elastic constants include the Poisson's ratio, which characterizes the resultant strain in the y-direction for a material under longitudinal deformation in the x-direction[7].
Materialization of specimens possessing Poisson's ratio was implemented by performing three-axial compression with heat treatment.
As we all know, the stress is independent from Young's modulus E and Poisson's ratio v for SS model.
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