Poisson ratio


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Poisson ratio

[pwä′sōn‚rā·shō]
(mechanics)
The ratio of the transverse contracting strain to the elongation strain when a rod is stretched by forces which are applied at its ends and which are parallel to the rod's axis.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The proportionality coefficient ([k.sub.s]; Eqn 1) has been experimentally derived (Boiling 1987) and analytically related to the soil's Poisson ratio such that [k.sub.s] is primarily a function of the soil's Poisson ratio, v (Berli et al.
[[gamma].sub.2] is the Poisson ratio of proppant 2, dimensionless;
(2) In this project, when elasticity modulus, Poisson ratio, or wave impedance ratio of the foam concrete increases, the vibration reduction effect is lowered.
where [E.sub.L] is longitudinal Young modulus, [E.sub.T] is transverse Young modulus, v is in plane Poisson ratio, [G.sub.P] is in plane shear modulus and [G.sub.T] is transverse shear modulus.
For the thermoplastic polymers, the plastic Poisson ratio is usually ranged from 0.1 and 0.3, which means the volume does not keep constant during the plastic deformation.
Numerical properties of intra-aneurysmal pressure impact fluid velocity membrane displacement and the deformed radius with respect to the Poisson ratio membrane thickness and extensional rigidity are studied.
Material properties Values Skeleton [3, 7] Young's modulus 3.72 GPa Poisson ratio 0.3 Density 1850 kg/[m.sup.3] Elastic modulus 0.5 GPa Muscle [8] Poisson ratio 0.4 Density 1000 kg/[m.sup.3]
For all the problems, the width of the beam is taken as unity and the shear correction factor and Poisson ratio are taken to be 5/6 and 0.3, respectively.
That is why the value of the Poisson ratio is practically constant and its minimum occurs for 30[degrees] (or 210[degrees]).
Relative to the original Poisson ratio in the original EK model, the initial Poisson ratio was 0, primarily because the sample started to compress.