Deformation refers to the alteration or change in the shape, size, or structure of a material in response to an applied force or stress. This physical transformation can occur in various ways, such as stretching, compressing, bending, or shearing. It is a fundamental concept in mechanics and materials science, influencing the behavior of materials under different conditions.Deformation is characterized by the material’s ability to return to its original shape after the applied force is removed, which distinguishes it from the concept of plasticity, where the material undergoes permanent changes. Understanding deformation is crucial in engineering, geology, School Management System and materials science, as it plays a vital role in designing structures, predicting material behavior, and studying the Earth’s crust.