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Elasticity is the ability of materials to return to their original shape after a deforming (stretching, compressing, shearing, bending) force has been removed.
In physics and materials science, elasticity is the ability of a body to resist a distorting influence and to return to its original size and shape when that influence or force is removed.
Learning Objectives. Explain the concepts of stress and strain in describing elastic deformations of materials. Describe the types of elastic deformation of objects and materials. A model of a rigid body is an idealized example of an object that does not deform under the actions of external forces.
First, the object returns to its original shape when the force is removed—that is, the deformation is elastic for small deformations. Second, the size of the deformation is proportional to the force—that is, for small deformations, Hooke’s law is obeyed.
Elasticity is a measure of the deformation of an object when a force is applied. Objects that are very elastic like rubber have high elasticity and stretch easily. Stress is force over area. Strain is change in length over original length. Most objects behave elastically for small strains and return to their original shape after being bent.
First, the object returns to its original shape when the force is removed—that is, the deformation is elastic for small deformations. Second, the size of the deformation is proportional to the force—that is, for small deformations, Hooke’s law is obeyed. In equation form, Hooke’s law is given by.
Elasticity is the ability of materials to return to their original shape after a deforming (stretching, compressing, shearing, bending) force has been removed.
