THE MODIFICATION OF RIGID-PLASTIC MODEL

A.I. Voropinov
VANT. Ser.: Mat. Mod. Fiz. Proc 1997. Вып.1. С. 66.

      The report proposed the modification of the rigid-plastic model for the calculation of plastic flows. The model is based on the introduction of the regularization addend according to Tikhonov method into the formula for the calculation of the stress (expressed via the deformation rate). The proposed model was used for the computations. The .comparison with the elastic plastic model results showed that .the method is well suited for strong deformation domain.
      It is interesting that the model demonstrates the relaxation property, so that the computations can run without artificial viscosity.
      The regularization addend can be chosen from some physical characteristics of the application or by relating it to the computational quantities.