Theoretical and computational issues in modelling material failure in strong discontinuity scenarios
The paper deals with several aspects related to numerical modelling of material failure in strong discontinuity settings: (a) the onset and development of local material failure in terms of continuum constitutive models equipped with strain softening. Closed forms formulas for the solutions of the d...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2004 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/192483 |
| Acceso en línea: | https://hdl.handle.net/2117/192483 https://dx.doi.org/10.1016/j.cma.2003.08.007 |
| Access Level: | acceso abierto |
| Palabra clave: | Continuum mechanics--Mathematical models Material failure Continuum models Strong discontinuities Numerical modelling Mecànica dels medis continus -- Mètodes numèrics Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures |
| Sumario: | The paper deals with several aspects related to numerical modelling of material failure in strong discontinuity settings: (a) the onset and development of local material failure in terms of continuum constitutive models equipped with strain softening. Closed forms formulas for the solutions of the discontinuous material bifurcation problem are given for a class of those models; (b) finite elements with embedded discontinuities: nodal and elemental enrichments families are formulated in the continuum strong discontinuity approach (CSDA); (c) instability treatment: a discrete viscous perturbation method at the failure surfaces is presented as a way to substantially improve the robustness of the numerical simulations. |
|---|