Markovitz, Hershel Formerly, Department of Chemistry, Carnegie-Mellon University, Pittsburgh, Pennsylvania.
- Models and properties
- Linear viscoelasticity
- Nonlinear elasticity
- Nonlinear viscoelasticity
- Related Primary Literature
- Additional Reading
In the broadest sense of the term, that part of mechanics which deals with the relation between force and deformation in material bodies. The nature of this relation depends on the material of which the body is constituted. It is customary to represent the deformation behavior of metals and other solids by a model called the linear or Hookean elastic solid (displaying the property known as elasticity) and that of fluids by the model of the linear viscous or Newtonian fluid (displaying the property known as viscosity). These classical models are, however, inadequate to depict certain nonlinear and time-dependent deformation behavior that is sometimes observed. It is these nonclassical behaviors which are the chief interest of rheologists and hence referred to as rheological behavior. See also: Elasticity; Viscosity
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