The purpose of the present investigation is a phenomenological comparison of two models as their mode of deformation is varied. It was initiated by the approximately linear relationship between stress σ and logarithmic time t observed in relaxation of metals, polymers, paper etc., and especially the relationship
$$ - \left( {d\sigma /d\ln t} \right)_{{\text{inft}}{\text{.}}} /\left( {\sigma _0 - \sigma _\infty } \right) = {\text{Ku}} \approx 0.1 $$
first observed and extensively studied by Kubát (11, 12).


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Copyright information

© Springer-Verlag Berlin Heidelberg 1975

Authors and Affiliations

  • Bertil Olofsson
    • 1
  1. 1.Department of Mechanical EngineeringChalmers University of TechnologyGothenburg 5Sweden

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