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@jemoka / Jemoka Knowledge Base / raw/concept/kbhelastic_modulus.md
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--- title: "Elastic Modulus" source: https://www.jemoka.com/posts/kbhelastic_modulus/ --- The Elastic Modulus is a measurement of how much deformation takes place given some force on the system. Formally, it is the slope of the stress-strain curve, defined by: \begin{equation} E = \frac{stress}{strain} \end{equation} The units in pascals as it is: force per area (pascals) divided by deformation (dimensionless, as it is a fraction of old shape over new shape \(\frac{V}{V}=1\)). Depending on how its measured, it is called different things: Young’s Modulus: tensile elasticity—tendency for object to deform along an axis with force applied (usually that is just called the Elastic Modulus) Shear’s Modulus: shear elasticity—tendency of an object to shear (deform in shape with the constant volume) with force applied Bulk Modulus: volumetric elasticity—tendency for an object to deform in all directions when uniformly loaded