VOLUMETRIC STRAIN
Volumetric strain: Volumetric strain of a deformed body is defined as the ratio of the
change in volume of the body to the deformation to its original volume. If V is the
original volume and dV is the change in volume that occurred due to the deformation,
the volumetric strain EV induced is given by
ev=dV/V
Consider a uniform rectangular bar of length l, breadth b and depth d as shown in the figure.
Its volume V is given by,
This means that the volumetric strain of a deformed body is the sum of the linear
strains in three mutually perpendicular directions.
Er. SP.ASWINPALANIAPPAN., M.E.,(Strut/.,)
Structural Engineer
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