|
|||||
|
|
A unified approach to the implicit integration of standard,non‐standard and viscous plasticity models |
|
| Authors: | Ren de Borst Otto M Heeres |
| Institution: | René de Borst,Otto M. Heeres |
| Abstract: | It is shown how modern concepts to integrate the elasto‐plastic rate equations of standard plasticity via an implicit algorithm can be generalized to plasticity without an explicitly defined yield surface and to overstress‐type models of viscoplasticity, where the stress point can be located outside the loading surface. For completeness, a tangent operator is derived that is consistent with the update algorithm. Copyright © 2002 John Wiley & Sons, Ltd. |
| Keywords: | unified approach standard elasto‐plasticity overstress viscoplasticity generalized plasticity hypoplasticity implicit integration consistent tangent operator |