Stiffness

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Glossary Term

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Stiffness is the resistance to elastic deformation due to applied forces or moments.
In engineering mechanics, stiffness is a value that describes the resistance a body can provide against deformation due to external action (torque or force).

The stiffness depends on the following factors:
  • Geometry of the solid
  • Material properties (modulus of elasticity and shear modulus)
A distinction is generally made between different stiffnesses, such as strain, torsional and bending stiffness. The distinction depends on the type of load. The reciprocal of the stiffness is the compliance.

Keywords

Stiffness Deformation