Elastic modulus
Elastic modulus
Elastic modulus (pronunciation: /ɪˈlæstɪk ˈmɒdjʊləs/), also known as modulus of elasticity, is a quantity that measures an object or substance's resistance to being deformed elastically (i.e., non-permanently) when a stress is applied to it. The elastic modulus is the proportion of stress (pascal) to strain (dimensionless).
Etymology
The term "elastic modulus" is derived from the Latin word "elasticus", meaning 'able to spring back', and the Latin word "modulus", meaning 'measure'.
Related terms
- Stress: The force applied to a material, divided by the material's cross-sectional area.
- Strain: The deformation caused by stress.
- Hooke's Law: The principle that the force (F) needed to extend or compress a spring by some distance (x) is proportional to that distance.
- Young's Modulus: A measure of the stiffness of a solid material and a good measure of the amount of elastic deformation that will occur as a result of an applied stress.
- Shear Modulus: Also known as the modulus of rigidity, is defined as the ratio of shear stress to the shear strain.
- Bulk Modulus: A measure of a substance's resistance to uniform compression.
See also
External links
- Medical encyclopedia article on Elastic modulus
- Wikipedia's article - Elastic modulus
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