Fully Lagrangian Method For Shear Band Capturing
Abstract
The phenomenon of strain localization is widespread and can reveal both during the geodynamic slidingof plates at macro scale length and at scales, character to a wells and mining. Herein we proposeaccurate way to solve problems based on the spectral Legendre element with incremental formulation,elastoplastic deformations, a consistent linearized matrix for governing relations. Two models of materialsare taken into account: the Drucker-Prager (pressure dependent) model and the Mises (pressureinsensitive) model. This report presents a qualitative and quantitative analysis of the kinematic pattern ofthe lines of plastic deformations at different characteristic scales and types of stress states. It is shown forgeneral case pressure dependent Drucker-Prager model, in contrast to Mises model, solution can not possesssymmetric and continuous values: both radial and hoop stresses in the case of thick-walled cylinderunder compression can have periodic symmetry, but are discontinuous along the thickness.
- Publication:
-
EGU General Assembly Conference Abstracts
- Pub Date:
- May 2020
- DOI:
- 10.5194/egusphere-egu2020-20886
- Bibcode:
- 2020EGUGA..2220886K