Question

If poisson's ratio is 1/2
it mean?
what does
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Answer 1

it mean = 1:2 a=1 and b=2

Answer 2

Answer

Poisson's ratio is a measure of the Poisson effect, the phenomenon in which a material tends to expand in directions perpendicular to the direction of compression. ... A perfectly incompressible material deformed elastically at small strains would have a Poisson's ratio of exactly 0.5.

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hope it helps u