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Stiffness

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Stiffness is the resistance of an elastic body to deflection or deformation by an applied force - and can be expressed as

k = F / δ                              (1)

where

k = stiffness (N/m, lb/in)

F = applied force (N, lb)

δ = extension, deflection (m, in)

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Related Topics

Mechanics

The relationships between forces, acceleration, displacement, vectors, motion, momentum, energy of objects and more.

Statics

Forces acting on bodies at rest under equilibrium conditions - loads, forces and torque, beams and columns.

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Beams - Fixed at Both Ends - Continuous and Point Loads

Stress, deflections and supporting loads.

Beams - Supported at Both Ends - Continuous and Point Loads

Supporting loads, stress and deflections.

Cantilever Beams - Moments and Deflections

Maximum reaction forces, deflections and moments - single and uniform loads.

Euler's Column Formula

Calculate buckling of columns.

Metals and Alloys - Young's Modulus of Elasticity

Elastic properties and Young's modulus for metals and alloys like cast iron, carbon steel and more.

Modulus of Rigidity

Shear Modulus (Modulus of Rigidity) is the elasticity coefficient for shearing or torsion force.

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The torsion of solid or hollow shafts - Polar Moment of Inertia of Area.

Three-Hinged Arches - Continuous and Point Loads

Support reactions and bending moments.

Young's Modulus, Tensile Strength and Yield Strength Values for some Materials

Young's Modulus (or Tensile Modulus alt. Modulus of Elasticity) and Ultimate Tensile Strength and Yield Strength for materials like steel, glass, wood and many more.

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