Lab2-Elastic_Constants - Lab 2 Elastic Constants Mechanics...

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Lab 2 – Elastic Constants Mechanics of Deformable Solids Spring 2011 Introduction The relationship between stress and strain for most materials can be divided into two stages: elastic and plastic. Elastic deformation is reversible. That is once a load or force is removed from an object, the body will return to its original shape. Conversely, plastic deformation is irreversible. Once the specimen is unloaded the object will not return to its original shape. The majority of engineering structures are designed to operate within the elastic range of deformation. This experiment will explore the predictive nature of elastic deformation by focusing on its linear relationships between stress and strain. Elastic Deformation Elasticity can be defined as the study of bodies that reversibly deform under stress. Essentially this means that a body will deform under an applied force, after the force is removed, the body will return to its original un-stretched state. By assuming isotropic and homogeneous properties, two independent elastic constants are used to characterize elastic deformation behavior of a material. These are known as the Young’s Modulus and
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Lab2-Elastic_Constants - Lab 2 Elastic Constants Mechanics...

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