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Adaptive impact analysis in flexible multibody systems based on hierarchically refined IGA models
Citation Link: https://doi.org/10.15480/882.9667
Publikationstyp
Journal Article
Date Issued
2024-05-18
Sprache
English
TORE-DOI
Journal
Volume
94
Issue
9
Start Page
2643
End Page
2665
Citation
Archive of Applied Mechanics 94 (9): 2643-2665 (2024)
Publisher DOI
Scopus ID
Publisher
Springer
Peer Reviewed
true
Usually, detailed impact simulation models within flexible multibody systems have to be set up manually rather than being generated automatically. This is because the process requires prior knowledge of the time and location of the impact, as well as the element resolution within the contact area. If the penalty method is used to determine the occurring contact forces, the corresponding penalty factor also needs to be determined manually. This work, however, presents an adaptive algorithm to simulate impacts within flexible multibody systems fully automatically using reduced isogeometric analysis models, the floating frame of reference formulation, and quasistatic contact models for an efficient but still accurate simulation. The adaptive algorithm detects impacts in the system, determines the contact locations on the bodies, refines the contact area, and determines the penalty factor, and therefore automatically simulates impacts. The work shows how to automatically simulate impacts in flexible multibody systems without user action or prior knowledge of impact location and size. The first application example simulates significant elastodynamic effects within a long flexible rod. The goal is to validate the algorithm by preserving the wave propagation and energy of the system. The second application example simulates the impacts of two flexible double pendulums. This setup is a suitable benchmark for the complete adaptive impact analysis procedure as the flexible double pendulums undergo large rigid body motions.
Subjects
Adaptive
IGA
Impact
Quasistatic
Refinement
DDC Class
620.1: Engineering Mechanics and Materials Science
624.17: Structural Analysis and Design
004: Computer Sciences
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