A modal derivatives enhanced Craig-Bampton method for geometrically nonlinear structural dynamics

L. Wu, P. Tiso, F. Van Keulen

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

3 Citations (Scopus)

Abstract

Component Mode Synthesis is commonly used to simulate the structural behavior of complex systems with many degrees of freedom. The Craig-Bampton approach is one of the most commonly used techniques. A novel reduction method is proposed here for geometrically nonlinear models by augmenting the constraint modes and internal vibration modes with the modal derivatives. A subset of the corresponding modal derivatives can therefore be efficiently used to consider the geometric nonlinearities. This modal substructuring technique is an extension of the Craig-Bampton method without increasing the difficulty of implementation. The applicability and efficiency of the modal derivative based Craig-Bampton method for nonlinear system is demonstrated by a numerical example.

Original languageEnglish
Title of host publicationProceedings of ISMA 2016
Subtitle of host publicationInternational Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics
EditorsP. Sas, D. Moens, A. van de Walle
Place of PublicationLeuven, Belgium
PublisherKU Leuven
Pages3615-3624
ISBN (Electronic)978-907380294-0
Publication statusPublished - 2016
Event27th International Conference on Noise and Vibration Engineering and International Conference on Uncertainty in Structural Dynamics - Leuven, Belgium
Duration: 19 Sep 201621 Sep 2016
https://www.mech.kuleuven.be/en/pma/events/isma-2016

Conference

Conference27th International Conference on Noise and Vibration Engineering and International Conference on Uncertainty in Structural Dynamics
Abbreviated titleISMA 2016 and USD2016
CountryBelgium
CityLeuven
Period19/09/1621/09/16
Internet address

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