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Article

A Novel Test Rig for the Basic Nonlinear Characterization of Bolted Joints

1
School of Energy and Power Engineering, Beihang University, Beijing 100191, China
2
Collaborative Innovation Center of Advanced Aero-Engine, Beihang University, Beijing 100083, China
3
Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10139 Torino, Italy
*
Authors to whom correspondence should be addressed.
Academic Editor: César M. A. Vasques
Appl. Sci. 2021, 11(12), 5613; https://doi.org/10.3390/app11125613
Received: 16 May 2021 / Revised: 11 June 2021 / Accepted: 15 June 2021 / Published: 17 June 2021
(This article belongs to the Special Issue Bladed Disks Structural Dynamics)
The paper aims at performing a comprehensive experimental study on the peculiar properties of a bolted joint, and investigates the damping induced at different interfaces (between flanges, bolt head/nut and flange, threads) during vibrations. A novel, simplified, single-bolt system joining a two-beam structure is designed and tested. Experimental results under different boundary conditions are presented, and the influence of the harmonic excitation force, as well as the bolt tension, is investigated. The test results show how the contact interface between the clamped flanges plays an important role in terms of frictional damping provided to the system during vibration, while the contact interfaces between the head/nut and flange, and secondarily between the threads, affect the system response at a less, but not negligible, extent. The test setup and test procedure can provide a database to validate single bolt contact models to be included in a more complex structure. View Full-Text
Keywords: bolted joints; experimental test rig; clamping force; structural dynamics; friction damping bolted joints; experimental test rig; clamping force; structural dynamics; friction damping
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MDPI and ACS Style

Wang, Y.; Ma, Y.; Hong, J.; Battiato, G.; Firrone, C.M. A Novel Test Rig for the Basic Nonlinear Characterization of Bolted Joints. Appl. Sci. 2021, 11, 5613. https://doi.org/10.3390/app11125613

AMA Style

Wang Y, Ma Y, Hong J, Battiato G, Firrone CM. A Novel Test Rig for the Basic Nonlinear Characterization of Bolted Joints. Applied Sciences. 2021; 11(12):5613. https://doi.org/10.3390/app11125613

Chicago/Turabian Style

Wang, Yongfeng, Yanhong Ma, Jie Hong, Giuseppe Battiato, and Christian Maria Firrone. 2021. "A Novel Test Rig for the Basic Nonlinear Characterization of Bolted Joints" Applied Sciences 11, no. 12: 5613. https://doi.org/10.3390/app11125613

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