Title:
|
Further developments in stress initialization in geomechanics via FEM and a two-step procedure involving Airy functions
|
Author:
|
Rafels Ybern, Carles; Jaqués Adell, Irene; Aliguer Piferrer, Ignasi; Carol, Ignacio; Prat Catalán, Pere; Lakshmikantha, Ramasesha Mookanahallipatna; Segura Segarra, José María
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. MECMAT - Mecànica de Materials |
Abstract:
|
The in-situ stress field in rock masses is a key aspect when a numerical analysis of a rock mass is carried out in any area of geo-engineering, such as civil, mining, or Oil & Gas. A method for the numerical generation of the in-situ stress state in the FE context, based on Airy stress functions was previously introduced. It involves two steps: 1) an estimate of the stress state at each Gauss point is generated, and 2) global equilibrium is verified and re-balancing nodal forces are applied as needed. In this paper, new developments towards improving the accuracy of the stress proposal are discussed. A real application example has been used to illustrate the results achieved with the new implementation. |
Subject(s):
|
-Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques -Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits -Rock mechanics--Mathematical models -In-situ stress -initialization stress function -Finite Element Method (FEM) -Oil & Gas. -Mecànica de roques -- Models matemàtics |
Rights:
|
|
Document type:
|
Article - Published version Conference Object |
Share:
|
|