A mixed elastoplastic / rigid plastic material model

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Abstract

A new integration algorithm for plastic deformation is derived in combination with the anisotropic Hill’49 yield criterion. The algorithm degenerates to the Euler forward elastoplastic material model for small deformations and to the rigid plastic material model for large strain increments. The new model benefits from the advantages of both the elastoplastic and rigid plastic material models: accuracy and fast convergence over a large range of strain increments. The performance of the new algorithm is tested by a deep drawing simulation of a rectangular product. It can be concluded that the new algorithm performs well: the plastic thickness strain distribution of the mixed model inclines towards the elastoplastic material model
Original languageUndefined
Number of pages6
Publication statusPublished - 1999
Event4th International Conference and Workshop on Numerical Simulation of 3D Metal Forming Processes, NUMISHEET 1999 - Besancon, France
Duration: 13 Sep 199917 Sep 1999
Conference number: 4

Conference

Conference4th International Conference and Workshop on Numerical Simulation of 3D Metal Forming Processes, NUMISHEET 1999
Abbreviated titleNUMISHEET 1999
CountryFrance
CityBesancon
Period13/09/9917/09/99
Other1999

Keywords

  • IR-59319

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