Question

What is meant by Poisson's ratio?

Answer 1

1. Poisson's ratio is the ratio of lateral strain to longitudinal strain.
2. The equation of the poison's ratio is
   $poissonsratio=\frac{lateralstrain}{longitudinalstrain}$
3. lateral strain, also known as transverse strain, is defined as the ratio of the change in diameter of a circular bar of a material to its diameter due to deformation in the longitudinal direction.
4. A longitudinal strain is defined as change in the length to the original length of an object. It is caused due to longitudinal stress and is denoted by the Greek letter epsilon 𝜺.
5. The poisons ratio is due to the Poisson effect, when any material is stretched in one direction, the material tends to compress in the direction opposite to the direction of the force acting.
6. Poisson's ratio is a scalar quantity.
7. It has no units.