Efficient and Accurate Consideration of Nonlinear Joint Contact Within Multibody Simulation

Research output: Chapter in Book/Report/Conference proceedingsConference contribution

Abstract

For the integration of flexible bodies into the multibody simulation the Component Mode Synthesis (CMS) has been established as a standard reduction tool. In the case of flexible bodies containing joints with a large spatial distribution the CMS is not suitable. In order to capture the local nonlinearities inside the joints the CMS reduction base is extended with problem-oriented trial vectors which are computed based on trial vector derivatives. The focus of this contribution is on the extension of the mentioned reduction method to general multibody dynamic systems. It will be reported how the trial vectors need to be modified in order to remove the rigid body content. Also the consideration of the contact forces in the vector of generalized forces will be discussed. Finally the method will be demonstrated on a car pendulum system with a pendulum designed as a multilayer sheet structure. The time integration is performed with a modified HHT solver. It can be reported, that the suggested approach gives an excellent balance between accuracy and computational effort.

Original languageEnglish
Title of host publicationDynamic Behavior of Materials
EditorsGaëtan Kerschen
PublisherSpringer
Pages441-448
Number of pages8
ISBN (Print)9783319152202
DOIs
Publication statusPublished - 2016

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume1
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Keywords

  • Joint contact
  • Jointed structures
  • Model order reduction
  • Multibody simulation

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