Title:
|
Error estimation and adaptivity for nonlinear FE analysis
|
Author:
|
Huerta, Antonio; Rodríguez Ferran, Antonio; Díez, Pedro
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III; Universitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria |
Abstract:
|
An adaptive strategy for nonlinear finite-element analysis, based on the combination of error estimation and h-remeshing, is presented. Its two main ingredients are a residual-type error estimator and an unstructured quadrilateral mesh generator. The error estimator is based on simple local computations over the elements and the so-called patches. In contrast to other residual estimators, no flux splitting is required. The adaptive strategy is illustrated by means of a complex nonlinear problem: the failure analysis of a single-edge notched beam. The quasi-brittle response of concrete is modelled by means of a nonlocal damage model. |
Abstract:
|
Peer Reviewed |
Subject(s):
|
-Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits -Fracture mechanics--Mathematical models -finite elements -error estimation -adaptivity -nonlinearity -quality of FE solutions -damage models -Mecànica de fractura -- Models matemàtics |
Rights:
|
|
Document type:
|
Article - Submitted version Article |
Share:
|
|