elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

A SBS-BD based solver for domain decomposition in BE methods

Araújo, Franciso Celio and D'Azevedo, E.F. and Gray, L.J and Degenhardt, Richard (2013) A SBS-BD based solver for domain decomposition in BE methods. Engineering Analysis with Boundary Elements, 37, pp. 1267-1275. Elsevier. DOI: 10.1016/j.enganabound.2013.06.006 ISSN 0955-7997

[img] PDF
3MB

Official URL: http://www.sciencedirect.com/science/article/pii/S0955799713001306

Abstract

In boundary element methods (BEM), subregioning may be needed either to model complex solids (with cracks, stiffeners, layers, inclusions, etc.) or simply to decompose a problem by computational reasons (e.g. for parallelization). Since the development of the first BEM codes, many attempts have been made to efficiently devise generic boundary-element subregioning techniques. Crucial points are how to profit from the sparsity of the global matrix, and how to deal with traction discontinuities. In this work, the most fundamental steps for efficiently devising reliable and efficient subregioning algorithms are discussed. The subregion-by-subregion (SBS) algorithm and the preconditioning of the embedded Krylov solver are addressed. Besides the BiCG solver, the BiCGSTAB(l) is newly incorporated into the BE-SBS code. The 3D microstructural analysis of carbon-nanotube-reinforced composites (CNT composites) is considered to verify the performance of the algorithm. Numerical results showing the efficiency of the preconditioned solvers studied are presented.

Item URL in elib:https://elib.dlr.de/83802/
Document Type:Article
Title:A SBS-BD based solver for domain decomposition in BE methods
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Araújo, Franciso CelioDept Civil Eng, UFOP, 35400-000 Ouro Preto, MG, BrazilUNSPECIFIED
D'Azevedo, E.F.ORNL, Oake Ridge, USAUNSPECIFIED
Gray, L.JDept Civil Eng, UFOP, 35400-000 Ouro Preto, MG, BrazilUNSPECIFIED
Degenhardt, RichardUNSPECIFIEDUNSPECIFIED
Date:2013
Journal or Publication Title:Engineering Analysis with Boundary Elements
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:37
DOI :10.1016/j.enganabound.2013.06.006
Page Range:pp. 1267-1275
Publisher:Elsevier
ISSN:0955-7997
Status:Published
Keywords:3D standard BEM; Subregioning techniques; Krylov solvers; Preconditioning; General composites
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Degenhardt, Richard
Deposited On:18 Sep 2013 14:24
Last Modified:31 Jul 2019 19:41

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.