Extending the Theory of Creep to Viscoplasticity Academic Article uri icon


  • A viscoplastic theory is developed that reduces to creep theory analytically under steady-state conditions. A fairly simple model is constructed from this theoretical framework by defining material functions that have close ties to the physics of inelasticity; consequently, the model is characterized easily. The computational characteristics of the model are enhanced, in general, by converting the kinetics equation from a hyperbolic relationship to a power-law relationship. The resulting model is applied to copper and to the copper alloy, NARloy Z. © 1994 by ASME.

author list (cited authors)

  • Freed, A. D., Walker, K. P., & Verrilli, M. J.

citation count

  • 11

publication date

  • February 1994