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A homogenization-based two-way multiscale approach for composite structures

Chrupalla, David and Berg, S. and Kärger, Luise and Doreille, M. and Ludwig, T. and Jansen, E. and Rolfes, R. and Kling, Alexander (2011) A homogenization-based two-way multiscale approach for composite structures. ECCOMAS – Thematic Conference on the Mechanical Response of Composites, 21. - 23. Sept. 2011, Hannover, Deutschland.

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Abstract

In this paper, a multiscale modeling technique for an automated iterative loose coupling approach is presented. It is used to describe the global (macroscopic) behaviour of composite structures taking into account the effects of local phenomena. The main attribute of this new approach is the indirect connection of global and local FE-models. While the global-to-local transition assigns prescribed displacements to the local boundaries, the local-to-global transition is realized by averaged stresses and an updated tangent stiffness operator. The approach has been implemented in the commercial FE code ABAQUSTM by user-defined subroutines and scripts. To illustrate the feasibility of the approach, a test case for a solid-to-solid coupling has been investigated. By comparing the results of the multiscale approach with numerical reference solutions, it could be shown that the implementation works appropriate. However, some numerical inaccuracies still need to be reduced.

Document Type:Conference or Workshop Item (Paper)
Title:A homogenization-based two-way multiscale approach for composite structures
Authors:
AuthorsInstitution or Email of Authors
Chrupalla, DavidUNSPECIFIED
Berg, S.Leibniz Universität Hannover
Kärger, LuiseUNSPECIFIED
Doreille, M.SMR, CH-Bienne
Ludwig, T.SMR, CH-Bienne
Jansen, E.Leibniz Universität Hannvoer
Rolfes, R.Leibniz Universität Hannover
Kling, AlexanderUNSPECIFIED
Date:September 2011
Keywords:Multiskalenmodellierung, Homogenisierung, FEM, Kopplungsmethoden
Event Title:ECCOMAS – Thematic Conference on the Mechanical Response of Composites
Event Location:Hannover, Deutschland
Event Type:national Conference
Event Dates:21. - 23. Sept. 2011
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 - Simulation & Validation
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Isolde Böhringer-Thelen
Deposited On:26 Oct 2011 11:18
Last Modified:26 Oct 2011 11:18

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