Strain
Strain is the change in the length or size of a stressed body divided by its original length or size.
It can be linear strain, shear strain, or volumetric strain.
Strain = change in length / original length
ε = x / L
Where:
ε = Strain
x = Change in length
L = Original length
Strain is a measure of deformation that occurs in a material when an external force is applied.
It represents the ratio of the change in length to the original length of the material.
Strain is a dimensionless quantity because it compares two lengths.
Types of strain include:
Linear Strain – change in length in one direction.
Shear Strain – angular distortion when a material is subjected to shear force.
Volumetric Strain – change in volume under pressure.
Strain indicates how much a material stretches, compresses, or distorts under applied load.
