Young’s Modulus

Young’s modulus or elastic modulus is a mechanical property of linear elastic solid materials. It defines the relationship between stress and strain in a material and is given by:

E=σϵ

$$E=\frac{\sigma }{ϵ}$$

 

where, ‘E

$E$

‘ is the Young’s modulus of the material, ‘σ

$\sigma$

‘ and ‘ϵ

$ϵ$

‘ are the stress and strain respectively.

When a load is applied to the material, the material deforms. The material is called elastic if it returns back to its original shape after the load is removed. A constant Young’s modulus means that the relationship between stress and strain is linear. A material is said to be very rigid if the Young’s modulus is very high.

Young’s Modulus has a units of pressure or stress, since the strain is dimensionless quantity.

Last updated: January 21st, 2020