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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