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Flexible multibody impact simulations based on the isogeometric analysis approach
Citation Link: https://doi.org/10.15480/882.3901
Publikationstyp
Journal Article
Date Issued
2022-01
Sprache
English
Author(s)
Institut
TORE-DOI
Journal
Volume
54
Start Page
75
End Page
95
Citation
Multibody system dynamics 54 (1): 75-95 (2022-01)
Publisher DOI
Scopus ID
Publisher
Springer Science + Business Media B.V.
Peer Reviewed
true
Usually detailed impact simulations are based on isoparametric finite element models. For the inclusion in multibody dynamics simulation, e.g. in the framework of the floating frame of reference, a previous model reduction is necessary. A precise representation of the geometry is essential for modeling the dynamics of the impact. However, isoparametric finite elements involve the discretization of the geometry. This work tests isogeometric analysis (IGA) models as an alternative approach in the context of impact simulation in flexible multibody systems. Therefore, the adaption of the flexible multibody system procedure to include IGA models is detailed. The use of non-uniform rational basis splines (NURBS) allows the exact representation of the geometry. The degrees of freedom of the flexible body are afterwards reduced to save computation time in the multibody simulation. To capture precise deformations and stresses in the area of contact as well as elastodynamic effects, a large number of global shape functions is required. As test examples, the impact of an elastic sphere on a rigid surface and the impact of a long elastic rod are simulated and compared to reference solutions.
Subjects
Impact simulation
Isogeometric analysis
Floating frame of reference formulation
Hertz
DDC Class
530: Physik
600: Technik
620: Ingenieurwissenschaften
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