Strain


Quick
Strain is the resulting deformation due to stress. It is a dimensionless quantity. Normal strain is often referred to as just strain, even though there are other types as given below.


Equations
(Eq1)    
strain  =  
change in length
original length
General equation for strain


Types of Strain Quicklist
Axial
Bending
Bulk
Compressive
Elastic
Engineering
Fracture
Lateral
Lattice
Longitudinal
Normal
Principal
Shearing
Tensile
Thermal
True
Ultimate
Volume
Yield


Details

Strain describes the resulting deformation due to stress. Strain is the amount of "give" or deformation caused by stress, such as deflection in bending, elongation in tension, contraction in compression, and angular twist in torsion. The general equation for strain is:

(Eq1)    
strain  =  
change in length
original length

The quantity "change in original length over original length" is the "unit elongation," or "strain," which is dimensionless.



Related
▪ L - Stress
▪ L - Normal Strain
▪ L - Bulk Strain
▪ L - True Stress, True Strain, Engineering Stress, and Engineering Strain
▪ L - Strain Energy
▪ L - Strain-Energy Density