👉 In mathematics, a "strain" is defined as a quantity that represents the deformation of a material due to an applied force. Strains can be positive or negative, and they are commonly used in structural engineering to determine how much a structure will deform under different loads. For example, if a beam has been subjected to a load, it deforms in such a way that its cross-sectional area is reduced by the amount of material that has been added. This deformation can be represented as a strain
