Structural

Engineering Strain

Definition

The change in length divided by the original length: ε = ΔL/L₀. Also called nominal strain, it is dimensionless but often expressed as a percentage or in microstrain (με).

Practical Note

Elastic strain is typically < 0.5% for metals. 0.2% offset strain is commonly used to define yield strength. 1000 με = 0.1% = 0.001 strain.

Related Calculators

Related Terms