# How to Calculate Poisson’s Ratio?

The equation for calculating poisson’s ratio is given as ν=(-ε_trans)/ε_axial. Transverse strain (ε_trans) is measured in the direction perpendicular to the applied force, and axial strain (ε_axial) is measured in the direction of the applied force.

## How to Calculate Poisson’s Ratio?

Poisson’s ratio is a numerical value that provides the ratio between the transverse and axial strain of an object when it is placed under a given uniform load. The ratio is named after French mathematician Siméon Denis Poisson and is one of the most important properties of anisotropic materials. It is a measure of the elastic response of a material when it is stretched or compressed in two perpendicular directions. Calculating Poisson’s ratio is relatively simple and can be done using a few basic principles of engineering.

To calculate Poisson’s ratio, first you need to know the modulus of elasticity, or Young’s modulus, of the material in question. Young’s modulus is a measure of the stiffness of a material and is defined as the ratio of stress to strain. It can be measured using tensile tests. Once you have the Young’s modulus, you can calculate Poisson’s ratio using the following formula:

Poisson’s ratio = -(1/E)

Where E is the Young’s modulus.

Poisson’s ratio is a dimensionless number, so the units don’t matter