Difference between revisions of "Viscoelastic"

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(Hookean Solid)
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==Hookean Solid==
 
==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>.
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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==
 
==Newtonian Liquid==

Revision as of 16:15, 12 September 2009

Definition

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

References