AFCO1D
Last updated
Last updated
This is an extension of model.
The name represents the following.
AF
--- Armstrong-Frederick type kinematic hardening rule
CO
--- Chaboche-Ohno type isotropic hardening reduction rule
Compared to , this AFCO1D
model further adopts the concept of a non-hardening plastic strain region. It is described by the following surface.
In which, points to the centre of the non-hardening plastic strain region. It may be called the back plastic strain. The field describes the size of this surface. It is further used to introduce a reduction term in the isotropic hardening.
The cyclic response is the following.
By introducing the reduction, one can obtain the following.
Further details can be found in the corresponding section in .
With a perfectly plastic response, the presents a non-degrading envelop.