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3D analysis of coupled thin-walled structural elements by means of standard boundary element formulations

Araújo, F.C. and Silva, K.I. and Degenhardt, Richard (2005) 3D analysis of coupled thin-walled structural elements by means of standard boundary element formulations. Mechanics and Materials Conference, 2005-06-01 - 2005-06-03, Louisiana, USA.

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Recently, some improvements of the generic BE/BE coupling algorithm based on Krylov's solvers, proposed by the first author of this paper and outlined in previous papers, were carried out by including discontinuous boundary elements in the BE code. As a consequence of that, traction continuity conditions, necessary for simulating edges and corners at coupling interfaces in models based on continuous boundary elements, must no longer be taken into account. Thus, the respective BE models for complex 3D regions become considerably simpler. In this paper, a general description of the main features of the algorithm is furnished. In addition, some strategies for making the analysis of moderate thin-walled structural elements by means of three-dimensional standard BE formulations possible are presented. A study of the performance of the code is also shown, where mainly computational efficiency parameters such as response precision and CPU time for assembling the system of algebraic equations and solving it are commented. Engineering systems involving thin-walled elements, possibly containing cracks, are simulated. High-precision IMSL routines (available in FORTRAN compilers) are used to study the performance of the code. Strategies for improving the conditioning of the systems are also commented.

Document Type:Conference or Workshop Item (Paper)
Title:3D analysis of coupled thin-walled structural elements by means of standard boundary element formulations
AuthorsInstitution or Email of Authors
Araújo, F.C.Dept. of Civil Engineering/UFOP
Silva, K.I.Dept. of Civil Engineering/UFOP
Degenhardt, RichardUNSPECIFIED
Date:June 2005
Keywords:Thin-walled structural elements, generic BE/BE coupling algorithm, discontinuous boundary elements, Krylov's solvers
Event Title:Mechanics and Materials Conference
Event Location:Louisiana, USA
Event Type:international Conference
Event Dates:2005-06-01 - 2005-06-03
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Deposited By: Doris Ries
Deposited On:07 Aug 2007
Last Modified:12 Dec 2013 20:26

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