Time integration scheme for elastoplastic models based on anisotropic strain-rate potentials
dc.contributor.author
hal.structure.identifier | RABAHALLAH, Meziane
|
dc.contributor.author
hal.structure.identifier | BOUVIER, Salima
|
dc.contributor.author
hal.structure.identifier | TEODOSIU, Cristian
|
dc.contributor.author
hal.structure.identifier | BALAN, Tudor
|
dc.date.accessioned | 2015 |
dc.date.available | 2015 |
dc.date.issued | 2009 |
dc.date.submitted | 2015 |
dc.identifier.issn | 0029-5981 |
dc.identifier.uri | http://hdl.handle.net/10985/9908 |
dc.description.abstract | Modelling of plastic anisotropy requires the definition of stress potentials (coinciding with the yield criteria in case of the associated flow rules) or, alternatively, plastic strain-rate potentials. The latter approach has several advantages whenever material parameters are determined by means of texture measurements and crystal plasticity simulations. This paper deals with a phenomenological description of anisotropy in elastoplastic rate-insensitive models, by using strain-rate potentials. A fully implicit time integration algorithm is developed in this framework and implemented in a static-implicit finite element code. Algorithmic details are discussed, including the derivation of the consistent (algorithmic) tangent modulus and the numerical treatment of the yield condition. Typical sheet-forming applications are simulated with the proposed implementation, using the recent non-quadratic strain-rate potential Srp2004-18p. Numerical simulations are carried out for materials that exhibit strong plastic anisotropy. The numerical results confirm that the presented algorithm exhibits the same generality, robustness, accuracy, and time-efficiency as state-of-the-art yield-criterion-based algorithms. |
dc.description.sponsorship | Financement Région Lorraine |
dc.language.iso | en |
dc.publisher | Wiley |
dc.rights | Post-print |
dc.subject | stress update algorithm |
dc.subject | backward Euler |
dc.subject | plastic strain-rate potential |
dc.subject | elastoplasticity |
dc.subject | sheet metal forming simulation |
dc.title | Time integration scheme for elastoplastic models based on anisotropic strain-rate potentials |
dc.identifier.doi | 10.1002/nme.2640 |
dc.typdoc | Article dans une revue avec comité de lecture |
dc.localisation | Centre de Metz |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des matériaux |
ensam.audience | Internationale |
ensam.page | 381–402 |
ensam.journal | International Journal for Numerical Methods in Engineering |
ensam.volume | 80 |
ensam.issue | 3 |
hal.identifier | hal-01192771 |
hal.version | 1 |
hal.status | accept |
dc.identifier.eissn | 1097-0207 |