Christian Fokam ; Franklin Kanko ; Rolland Djomi ; Bienvenu Kenmeugne ; Kanmogne Abraham et al. - Implantation by an implicit approach of an elastoplastic behaviour law in the finite element cast3m code

arima:7632 - Revue Africaine de Recherche en Informatique et Mathématiques Appliquées, August 30, 2022, Volume 37 - 2022 - https://doi.org/10.46298/arima.7632
Implantation by an implicit approach of an elastoplastic behaviour law in the finite element cast3m code

Authors: Christian Fokam ; Franklin Kanko ; Rolland Djomi ; Bienvenu Kenmeugne ; Kanmogne Abraham ; Guy Ntamack

This paper is dedicated to the implementation of a law of mechanical behavior in the finite element software Cast3M using an open source code generator named Mfront. To do so, an elastoplastic behaviour model has been chosen from existing laws in the literature. Following an implicit discretization, a hardware library corresponding to the isotropic and kinematic strain-hardening model is generated using Mfront. The UMAT computer interface is used to build the library in Cast3M. A validation of the approach has been carried out by comparing the numerical results obtained with the generated hardware library and the equivalent pre-existing library in Cast3M. Simulations in the case of a tensile bar and a perforated plate show almost identical results


Volume: Volume 37 - 2022
Published on: August 30, 2022
Accepted on: July 26, 2022
Submitted on: June 29, 2021
Keywords: Implantation of behaviour law,elastoplastic,finite elements,Cast3M,Mfront,Intégration loi de comportement,éléments finis,[SPI.MAT]Engineering Sciences [physics]/Materials,[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]


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