DEFORMA: is in physics and engineering the deformation of a continuous body (or structure) is any change in the geometrical configuration of the body that leads to a variation of its shape or its dimensions following the application of a stress. Eulero, who developed the three-dimensional model of the theory of infinitesimal deformations, and Cauchy, who developed the theory of finite deformations. To this end it is not so important to know the global
deformation of the body, but to arrive at a local characterization of the deformation, that is, of a description of the deformation that affects around a generic of each point of the body.
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