Abstract: Based on the FEM
(3-dimensional finite element method) and plastic increment in
flow theory, a constitutive equation is derived, as well as a
constitutive matrix of Mises model for uniform-strength
materials under the action of complex stress. In FEM
calculation, an accurate method of first order self-correction
is introduced, and three kinds of boundary (I.e. free, adherent
and sliding boundary) with contact elements applied are set up.
The method of condensed matrix in association with FEM is used
to solve the equation.
Key words:
Strength Flow theory Contact
condition Incremental method
Manuscript received on March
1, 1994
|