What is the correct definition of strain?

Answer 1

"strain" refers to the deformation or change in shape of a material when subjected to an external force or load. It is typically expressed as a ratio, either in terms of the change in length (linear strain) or the change in angle (angular strain) relative to the material's original dimensions. Strain is often represented using the symbol "ε" (epsilon) and can be described as:

ε = ΔL / L

Where:

• ε is the strain.

• ΔL is the change in length.

• L is the original length of the material.

Strain is a measure of how much a material deforms under stress, and it can be used to study the material's mechanical properties, such as its elasticity and ability to withstand external forces without permanent deformation or failure. It is an important concept in fields like materials science, civil engineering, and mechanical engineering.

Answer 2

There are a few definitions of the word strain:

to draw tight or taut, especially to the utmost tension; stretch to the full:

to exert to the utmost

to impair, injure, or weaken (a muscle, tendon, etc.) by stretching or overexertion.