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Young's modulus is the ratio of stress to strain in the linear elastic region of a material under tension or compression. Learn how to calculate it, its units, its applications, and its variations for different materials and conditions.
Elastic modulus is the unit of measurement of an object's or substance's resistance to being deformed elastically when a stress is applied to it. Learn about the definition, types, and calculation methods of elastic modulus, and how to use DFT to determine it.
The elastic properties can be well-characterized by the Young's modulus, Poisson's ratio, Bulk modulus, and Shear modulus or they may be described by the Lamé parameters. Young's modulus [ edit ]
Elasticity is the ability of a body to resist a distorting influence and to return to its original size and shape when the influence is removed. Learn about different kinds of elasticity, such as linear, nonlinear, and viscoelastic, and how they are measured by elastic moduli and stress-strain curves.
The elastic components, as previously mentioned, can be modeled as springs of elastic constant E, given the formula: = where σ is the stress, E is the elastic modulus of the material, and ε is the strain that occurs under the given stress, similar to Hooke's law.
Shear modulus is a measure of the elastic shear stiffness of a material and is defined as the ratio of shear stress to the shear strain. Learn how to calculate it, see its typical values for different materials, and explore its applications in wave propagation and plastic flow.
The first stage is the linear elastic region. The stress is proportional to the strain, that is, obeys the general Hooke's law, and the slope is Young's modulus. In this region, the material undergoes only elastic deformation. The end of the stage is the initiation point of plastic deformation.
is Young's modulus, and K {\displaystyle K} and n {\displaystyle n} are constants that depend on the material being considered. In this form, K and n are not the same as the constants commonly seen in the Hollomon equation .