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Revision as of 16:15, 12 September 2009 by Chisholm (Talk | contribs) (Hookean Solid)

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A substance that displays behavior that is both viscous and elastic is said to be viscoelastic. In this sense, viscoelastic materials are said to be a combination of the ideal (elastic) Hookean solid and the (viscous) Newtonian liquid, along with a time a dependence.

Hookean Solid

A Hookean solid is one that displays perfectly elastic behavior. This corresponds to the fact that an applied shear stress produces a shear strain in response. Recall that the shear stress (<math>\sigma</math>) is given by the applied force over the area which the force is applied, namely <math>\sigma = F/A</math>.

Newtonian Liquid