Question

Define volume stress.

Answer 1

when deforming forces are in such a way that there is a change in volume of a body then stress produced in that body is called volume stress.

mathematically,
volume stress = Load/area = pressure intensity

hence,S.I unit of volume stress is N/m².

and dimension of volume stress is $[ML^{-1}T^{-2}]$.

Answer 2

Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance or 3D shape occupies or contains. Volume is often quantified numerically using the SI derived unit, the cubic metre.

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