ELASTICITY OF SHEAR Meaning and
Definition
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Elasticity of shear refers to the ability of a material to resist deformation under shear stress. It is a measure of how easily a material can be stretched or distorted perpendicular to its applied force. The concept of shear stress arises when a force is applied parallel to the surface of an object, causing one layer of the material to slide against an adjacent layer.
In mechanics and materials science, the elasticity of shear is quantified by the shear modulus, also known as the modulus of rigidity. This modulus represents the ratio of shear stress to shear strain within the elastic range of the material. Shear modulus is typically represented by the symbol "G" and is expressed in units of pressure, such as pascals (Pa) or pounds per square inch (psi).
Materials with a higher elasticity of shear or shear modulus exhibit greater resistance to shear deformation. They are less prone to experiencing permanent deformation or structural failure when subjected to applied forces or loads. In contrast, materials with lower shear modulus are more prone to shear deformation and exhibit a greater tendency to undergo permanent shape change.
Understanding the elasticity of shear is crucial in fields such as engineering, architecture, and material design, as it helps in predicting and analyzing how different materials will respond to shearing forces, allowing for the development of safe and efficient structural systems and designs.
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