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Investigation of crossing and veering phenomena in an isogeometric analysis framework

Tornincasa, Stefano, Bonisoli, Elvio, Kerfriden, Pierre ORCID: and Brino, Marco 2014. Investigation of crossing and veering phenomena in an isogeometric analysis framework. Presented at: 32nd IMAC, A Conference and Exposition on Structural Dynamics, Brescia, Italy, 1-5 July 2012. Published in: Allemang, Randall ed. Topics in Modal Analysis II, Volume 8: Proceedings of the 32nd IMAC, A Conference and Exposition on Structural Dynamics, 2014. Conference Proceedings of the Society for Experimental Mechanics Series London: Springer, pp. 361-376. 10.1007/978-3-319-04774-4_34

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The dynamic properties of crossing and veering in coupled structures have been studied both numerically and analytically, but they are difficult to investigate using Finite Element Analysis because of the change in the topological arrangement due to the different configuration. Isogeometric Analysis, recently developed method for numerical simulation, could overcome some of the drawbacks of the change in the configuration such as remeshing, coupling between the nodes of the different models, need of a fine mesh to allow small change in the configuration to be comparable to the mesh size. The key of this method is to avoid meshing and using the same basis functions used by the geometry, namely Non-Uniform Rational B-Splines (NURBS), to define the discretization of a Finite Element model. Other advantages are the possibility of increasing the order of the functions to obtain smooth stress field across the element interfaces. An experimental test-rig composed by beams and masses, which allow different configuration and dynamic coupling as well, is used as test case to validate the accuracy of the results with respect to both experimental data and classical Finite Element Analysis.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: Crossing and veering phenomena; Isogeometric analysis; Modal analysis of coupled structure; Nitsche’s method.
Publisher: Springer
ISBN: 9783319047737
ISSN: 2191-5644
Last Modified: 11 Mar 2023 02:14

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