Reduced Isogeometric Analysis Models for Impact Simulations

Publikationstyp
Conference Paper
Date Issued
2021-08
Sprache
English
Author(s)
Rückwald, Tobias  orcid-logo
Held, Alexander  orcid-logo
Seifried, Robert  orcid-logo
Institut
Mechanik und Meerestechnik M-13  
TORE-URI
http://hdl.handle.net/11420/10977
Citation
International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (ASME 2021)
Contribution to Conference
International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, ASME 2021  
Publisher DOI
10.1115/DETC2021-67417
Scopus ID
2-s2.0-85120448940
Peer Reviewed
true
Detailed impact simulations in flexible multibody systems are usually based on isoparametric finite element models. For modeling the dynamics of an impact, a precise representation of the geometry is essential. However, isoparametric finite elements involve the discretization of the geometry.This work tests the isogeometric analysis (IGA) as an alternative approach in flexible multibody systems. The IGA enables the exact representation of the geometry by using non-uniform rational basis splines (NURBS) as element shape functions. In the context of an efficient impact simulation a model reduction and a possible inclusion of the floating frame of reference formulation is beneficial. The degrees of freedom of the flexible bodies are reduced using component mode synthesis to save computation time in the multibody simulation. For the precise description of deformations and stresses in the contact area as well as elastodynamic effects, a large number of global shape functions is required.As testing examples, the impact of two elastic spheres and a multibody multicontact problem including wave propagation in a long elastic rod are simulated and compared to reference solutions.
DDC Class
620: Ingenieurwissenschaften