vCalc.Strain

The Strain calculator computes the ratio of change in length to original length.

INSTRUCTIONS: Choose units and enter the following:

• (L)  This is the initial length.
• (ΔL)  This is the change in length.

Strain (S):  The calculator return the strain as a real number.  However, this can be automatically converted to percentage via the pull-down menu.

The Math / Science

This Strain equation computes engineering strain from the simplest definition, where Strain is simply a ration of the change in length to the original length.  The formula for strain is:

        ε = ΔL / L

where:

• ε is strain
• ΔL is the change in elongation.
• L is the original length

Related Calculators

• Change in Length due to Strain
• Percent Change in Length
• Stress
• Strain

Engineering strain is defined in terms of the change in length of a physical element (ΔL) divided by the original length of the physical element (L).¹

References