Abstract
The Floating Frame of Reference (FFR) provides a natural framework for the Model Order Reduction (MOR) of flexible multibody systems. The classical reduction carried out by a Galerkin projection on a reduced basis of Vibration Modes (VMs), however, is not applicable when the elastic deformations become finite. In this contribution, we present a MOR technique based on a quadratic manifold on which the reduced solution lives. The manifold is build by an expansion of the elastic displacements for each flexible body. The quadratic terms are formed by Modal Derivatives (MDs) that properly account for the effect of the geometric nonlinearity. As opposed to classical Galerkin projection for geometrically nonlinear systems, this approach minimizes the size of the reduced order model, at the price of a more complex nonlinear system.
Original language | English |
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Title of host publication | Proceedings of the ECCOMAS Thematic Conference on Multibody Dynamics 2015 |
Editors | J.M. Font-Llagunes |
Place of Publication | Barcelona, Spain |
Publisher | International Center for Numerical Methods in Engineering |
Pages | 422-430 |
ISBN (Electronic) | 9788494424403 |
Publication status | Published - 2015 |
Event | 2015 ECCOMAS Thematic Conference on Multibody Dynamics, Multibody Dynamics 2015 - Barcelona, Spain Duration: 29 Jun 2015 → 2 Jul 2015 |
Conference
Conference | 2015 ECCOMAS Thematic Conference on Multibody Dynamics, Multibody Dynamics 2015 |
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Country/Territory | Spain |
City | Barcelona |
Period | 29/06/15 → 2/07/15 |
Keywords
- Floating Frame of Reference
- Modal derivatives
- Model Order Reduction
- Quadratic manifold