**Its value is the ratio of the linear contraction of cross-section e’ to the elongation e, that is, ν = | e’|/e. In case of an entirely brittle material, the poisson ratio is zero, whereas for a completely elastic material, ν = 0.7.**

## How to Use Poisson’s Ratio?

Poisson’s ratio is a property of a material that defines the ratio of the relative contraction strain (or transverse strain) normal to the applied load to the relative extension strain (or axial strain) in the direction of the applied load. In other words, it is a measure of the material’s ability to expand and contract in response to an applied force.

In order to understand how to use Poisson’s ratio, it is important to first understand the concept of strain. Strain is a measure of the deformation of a material in response to an applied load. It is typically expressed as a fraction or percentage of the original length of the material.

Poisson’s ratio is a dimensionless quantity and is typically represented by the Greek letter ‘ν’. It is the ratio of the relative contraction strain to the relative extension strain in the direction of the applied load. The value of Poisson’s ratio ranges from -1 to 0.5. When the value is 0, the material is said to be incompressible, whereas when the value is -1, the material is said to be perfectly elastic.

Poisson’s ratio is an important property of a material,

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