Papers Published

1. Hueckel, Tomasz and Nova, Roberto, SOME HYSTERESIS EFFECTS OF THE BEHAVIOUR OF GEOLOGIC MEDIA., International Journal of Solids and Structures, vol. 15 no. 8 (1979), pp. 625 - 642 [0020-7683(79)90076-3] .
   (last updated on 2007/04/09)

   Abstract:
   A soil mechanics oriented theory of the hysteretic behavior of materials under alternating loading is presented. Special attention is focused on the behavior within the yield locus. The single hysteresis branches are described by piecewisely path independent laws with a variable compliance matrix depending on a scalar strain parameter. This parameter is chosen so that the polar symmetry of the unloading/reloading stress-strain curve in a uniaxial stress cycle is assured. The stress-strain constitutive laws are given either in incremental terms or in terms of finite quantities. Discrete and hierarchic memory of the cyclic behavior is discussed and the rules for continuation, reactivator generation of subsequent laws are formulated.

   Keywords:
   SOIL MECHANICS;MATHEMATICAL MODELS;MATERIALS - Mechanical Properties;STRESSES - Analysis;