Microsoft Word - bessonov-Golovashchenko-ud-040320a.doc

elastic-plastic part of the problem (6)-(9) the new return-map algorithm was applied. Taking into account the equations (8), we can transform the condi- tion (9) in the form 2 2 2 2 3 k G )B(J y D ≡≤− σ [...] 06e8a2d5b9a306f30019ad889e350cf5ea6753b50cf3092542b308030d730ea30d730ec30b9537052377528306e00200050004400460020658766f830924f5c62103059308b3068304d306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c6 [...] respectively. The Von Mises yield criterion is used to describe the elastic limit: ( ) 3 2 2 ySJ σ ≤− (9) where σ y is the current plastic flow stress (depends upon strain and strain rate). The energy conservation …