Download the verified PDF of "Theory of Elasticity and Plasticity" by Jane Helena from the following link:
Elasticity refers to the ability of a material to return to its original shape after being subjected to an external load. When a material is loaded within its elastic limit, it will deform, but will return to its original shape when the load is removed. The elastic behavior of materials is characterized by Hooke's Law, which states that the stress (force per unit area) is proportional to the strain (deformation per unit length).
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