Everything about Stiffness totally explained
» For pain and/or loss of range of motion of a joint, see joint stiffness
Stiffness is the resistance of an
elastic body to
deflection or
deformation by an applied
force. It is an
extensive material property.
Definition
The stiffness,
k, of a body is
»
where
» A is the cross-sectional area,
E is the
Young's modulus,
» L is the length of the element.
For the special case of unconstrained uniaxial tension or compression,
Young's modulus of elasticity can be thought of as a measure of the stiffness of a material.
Use in engineering
The stiffness of a structure is of principal importance in many engineering applications, so the
modulus of elasticity is often one of the primary properties considered when selecting a material. A high modulus of elasticity is sought when
deflections are undesirable, while a low
modulus of elasticity is required when flexibility is needed.
Further Information
Get more info on 'Stiffness'.
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