Article (Scientific journals)
Nonlinear modeling of structures with bolted joints: A comparison of two approaches based on a time-domain and frequency-domain solver
Lacayo, Robert; Pesaresi, Luca; Groß, Johann et al.
2019In Mechanical Systems and Signal Processing, 114, p. 413 - 438
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Keywords :
Damping; Friction; Harmonic balance; Modal analysis; Model updating; Nonlinear vibration; Bolted joint interfaces; Localized non-linearities; Modeling and simulating; Non-linear vibrations; Numerical benchmark; Prismatic structures; Control and Systems Engineering; Signal Processing; Civil and Structural Engineering; Aerospace Engineering; Mechanical Engineering; Computer Science Applications
Abstract :
[en] Motivated by the current demands in high-performance structural analysis, and by a need to better model systems with localized nonlinearities, analysts have developed a number of different approaches for modeling and simulating the dynamics of a bolted-joint structure. However, it is still unclear which approach might be most effective for a given system or set of conditions. To better grasp their similarities and differences, this paper presents a numerical benchmark that assesses how well two diametrically differing joint modeling approaches – a time-domain whole-joint approach and a frequency-domain node-to-node approach – predict and simulate a mechanical joint. These approaches were applied to model the Brake-Reuß beam, a prismatic structure comprised of two beams with a bolted joint interface. The two approaches were validated first by updating the models to reproduce the nonlinear response for the first bending mode of an experimental Brake-Reuß beam. Afterwards, the tuned models were evaluated on their ability to predict the nonlinearity in the dynamic response for the second and third bending modes. The results show that the two joint modeling approaches perform about equally as well in simulating the Brake-Reuß beam. In addition, the exposition highlights improvements that were made in each method during the course of this work and reveal further challenges in advancing the state-of-the-art.
Disciplines :
Mechanical engineering
Author, co-author :
Lacayo, Robert;  University of Wisconsin-Madison, Madison, United States
Pesaresi, Luca;  Imperial College London, London, United Kingdom
Groß, Johann;  University of Stuttgart, Stuttgart, Germany
Fochler, Daniel;  University of Stuttgart, Stuttgart, Germany
Armand, Jason;  Imperial College London, London, United Kingdom
Salles, Loïc  ;  Université de Liège - ULiège > Aérospatiale et Mécanique (A&M) ; Imperial College London, London, United Kingdom
Schwingshackl, Christoph ;  Imperial College London, London, United Kingdom
Allen, Matthew;  University of Wisconsin-Madison, Madison, United States
Brake, Matthew;  Rice University, Houston, United States
Language :
English
Title :
Nonlinear modeling of structures with bolted joints: A comparison of two approaches based on a time-domain and frequency-domain solver
Publication date :
2019
Journal title :
Mechanical Systems and Signal Processing
ISSN :
0888-3270
eISSN :
1096-1216
Publisher :
Academic Press
Volume :
114
Pages :
413 - 438
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
SNL - Sandia National Laboratories
DOE - United States. Department of Energy
Funding text :
Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA-0003525.
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