An improved accuracy analysis of elastoplastic integration algorithms
| Autor: | Karaoulanis, Fotios E. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Finite element method
Plasticity Plasticity -- Mathematical models Plasticitat Elements finits Mètode dels Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits [Àrees temàtiques de la UPC] Plasticitat -- Models matemàtics Accuracy Assessment Isoerror Maps Plasticity Implicit Integration Algorithm Mohr–Coulomb |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | An improved accuracy analysis of elastoplastic integration algorithms is presented and proposed in this paper. The notion of the well–established isoerror maps is extended and polar plots are constructed for a wide range of stress points, algorithmically selected in the principal stress space. The selection of the stress points is independent of the yield surface and therefore a general procedure is obtained. The individual maps are then joined together to produce a complete view of the accuracy assessment of the stress update algorithm. The proposed procedure is validated in a characteristic multisurface yield criterion. |
| Databáze: | OpenAIRE |
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