What is Strain?
The ratio of the change in the configuration (i.e. shape, length, or volume) to the original configuration of the body is called strain. Strain is denoted using the Greek letter ‘ϵ’.
The strain clearly says it is the amount of deformation experienced by the body in the direction of force applied, separated by the original proportions of the body.
Strain Formula
The relationship for deformation in terms of a solid’s length is given below:
Strain (ϵ) = Change in the configuration (δl) / Original configuration (L)
ϵ = δl / L
where,
ϵ is the Strain due to applied Stress
δl is the Change in Length
L is the Original Length of material
Strain Unit and Dimension
Strain has no unit as it is ratio of same same quantity. Hence, it is a dimensionless quantity
Stress and Strain
Stress and Strain are the two terms in Physics that describe the forces causing the deformation of objects. Deformation is known as the change of the shape of an object by applications of force. The object experiences it due to external forces; for example, the forces might be like squeezing, squashing, twisting, shearing, ripping, or pulling the object apart.
Let’s learn more about stress, strain, their formula, unit, dimension, relation between stress and strain and curve between them in this article
Table of Content
- What is Stress?
- Types of Stress
- What is Strain?
- Types of Strain
- Stress-Strain Curve
- Hooke’s Law
- What is Elastic Modulus?