A method of determining the elastoplastic behavior of components, in particular of gas turbine plants, at high temperatures. First of all, the linear-elastic behavior is determined and the inelastic behavior is taken into account on the basis of the linear-elastic results by using the Neuber rule, the anisotropic characteristics of the components, as occur in particular through the use of single-crystalline materials, are taken into account in a simple manner by using a modified anistropic Neuber rule in the form

##EQU1##

where

  • A=inelastic anisotropic correction term,
  • ##EQU2##

  •  where F, G, H, L, M and N are the Hill constants,
  • C=elastic anisotropic correction term, C=DE-1D
  • *=determined linear stress,
  • ep=estimated inelastic stress,
  • D=direction vector of the elastic and inelastic stresses
  • E-1=inverse stiffness matrix,
  • ER=reference stiffness,
  • 0=reference stress, and
  • , n=material constants.
  •  
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