抄録
This paper discusses two elastic-plastic soil models--an elastic-perfectly plastic model (extended von Mises model or Drucker-Prager model) and an elastic-plastic strain hardening model (Cambridge model). Both theories incorporate a yield surface or loading surface, which is dependent on the mean normal stress, and on the normality of the deformation rate vector to these surfaces. Analytical forms of stress-strain relationships for these soil models are stated in incremental form, suitable for use in numerical analysis.
