
There are two categories of stiffness, namely elastic stiffness under conditions of low temperatures or short times of loading, and viscous stiffness at high temperatures or long times of loading. The former is used to calculate critical strains in the structure in analytical design. The latter is used to assess the resistance of the material to de …...
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Ratio of force to unit displacement during simple harmonic motion. Dynamic stiffness of an elastomer varies with the frequency and amplitude of the input signal. See also: Accelerance, Apparent Mass, Mobility, Stiffness.
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