Convergence study on the c-beam using joint modes based on trial vector derivatives

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Abstract

In the last years joint modes based on trial vector derivatives have been presented. These joint modes allow an accurate consideration of nonlinear contact and friction forces inside jointed structures. If these joint modes are used for model reduction, even high fidelity finite element models can be time-integrated with acceptable effort. In recent research on joint nonlinearity and reduced order modelling a generic structure called “C-beam” or “S4 beam” was used. This structure consists of two C-shaped beams assembled at their ends by two bolted joints. In this work, the previously mentioned model reduction approach is applied to the C-Beam. A convergence study with respect to the number of additional joint modes for different excitation levels is presented. In addition, it is investigated whether joint modes are able to reproduce well-known damping phenomena due to friction inside joints at different preload levels. For this purpose, a detailed observation of local sticking/slipping effects is given.

Original languageEnglish
Title of host publicationNonlinear Structures and Systems, Volume 1 - Proceedings of the 38th IMAC, A Conference and Exposition on Structural Dynamics, 2020
EditorsGaetan Kerschen, Matthew R.W. Brake, Ludovic Renson
PublisherSpringer
Pages1-8
Number of pages8
ISBN (Print)9783030476250
DOIs
Publication statusPublished - 2021
Event38th IMAC, A Conference and Exposition on Structural Dynamics, 2020 - Houston, United States
Duration: 10 Feb 202013 Feb 2020

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference38th IMAC, A Conference and Exposition on Structural Dynamics, 2020
CountryUnited States
CityHouston
Period10.02.202013.02.2020

Keywords

  • Damping
  • Friction
  • Joint contact
  • Model order reduction
  • Nonlinearity

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