Abstract
In this paper, viscoplasticity is adopted as regularization technique to avoid the mesh sensitivity problem in strain localization simulation of multiphase geomaterials in quasi-static and isothermal conditions. Drucker-Prager yield surface with isotropic linear hardening/softening and non-associated plastic flow is used for simplicity. The regularizing effect of viscoplastic model is analyzed by numerical simulation of an undrained plane strain biaxial compression test on initially water saturated dense sand. Mesh sensitivity is examined by using different spatial discretization and the results denote the crucial influence of the loading velocity on the viscous regularization of quasi-static process.
| Original language | English (US) |
|---|---|
| Title of host publication | 11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014 |
| Publisher | International Center for Numerical Methods in Engineering |
| Pages | 3495-3503 |
| Number of pages | 9 |
| ISBN (Print) | 9788494284472 |
| State | Published - Jul 1 2014 |
| Event | Joint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014 - Barcelona, Spain Duration: Jul 20 2014 → Jul 25 2014 |
Other
| Other | Joint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014 |
|---|---|
| Country | Spain |
| City | Barcelona |
| Period | 7/20/14 → 7/25/14 |
Keywords
- Drucker-Prager
- Multiphase porous materials
- Quasi-static loading
- Strain localization
- Viscoplastic regularization
ASJC Scopus subject areas
- Mechanics of Materials
- Computational Theory and Mathematics
- Computer Science Applications
- Mechanical Engineering