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Poisson's ratio
(redirected from Poisson ratio)

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Poisson's ratio
n
(Physics / 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, ν


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In this case, the lateral stress ratio should be defined as k = v/(l - v), where v is the Poisson ratio of the material.
The Poisson ratio was calculated from the initial slope of the longitudinal strain versus transverse strain.
In our previous articles [10-15], we have shown that the stress--strain nonlinearity of thermoplastics observed in the tensile creep can be viewed (at least partly) as a consequence of the strain-induced dilatation [1, 6, 9] that occurs in materials with the Poisson ratio v < 0.
 
 
 
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