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Open AccessArticle

Numerical and Experimental Analysis of Nonlinear Vibrational Response due to Pressure-Dependent Interface Stiffness

1
Institute of Mechanical Engineering, I2M-UMR 5295 CNRS-University of Bordeaux, 351 cours de liberation-Bat A4-RDC, 33405 Talence, France
2
DIMA-Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy
3
Institute of Earth Sciences (ISTerre) BP 53, CEDEX 9, 38041 Grenoble, France
*
Author to whom correspondence should be addressed.
Lubricants 2020, 8(7), 73; https://doi.org/10.3390/lubricants8070073
Received: 9 June 2020 / Revised: 23 June 2020 / Accepted: 7 July 2020 / Published: 10 July 2020
(This article belongs to the Special Issue Interfacial Dissipative Phenomena in Tribomechanical Systems)
Modelling interface interaction with wave propagation in a medium is a fundamental requirement for several types of application, such as structural diagnostic and quality control. In order to study the influence of a pressure-dependent interface stiffness on the nonlinear response of contact interfaces, two nonlinear contact laws are investigated. The study consists of a complementary numerical and experimental analysis of nonlinear vibrational responses due to the contact interface. The laws investigated here are based on an interface stiffness model, where the stiffness property is described as a nonlinear function of the nominal contact pressure. The results obtained by the proposed laws are compared with experimental results. The nonlinearity introduced by the interface is highlighted by analysing the second harmonic contribution and the vibrational time response. The analysis emphasizes the dependence of the system response, i.e., fundamental and second harmonic amplitudes and frequencies, on the contact parameters and in particular on contact stiffness. The study shows that the stiffness–pressure trend at lower pressures has a major effect on the nonlinear response of systems with contact interfaces. View Full-Text
Keywords: nonlinear dynamic response; second harmonics; experiments; numerical modelling; interface stiffness nonlinear dynamic response; second harmonics; experiments; numerical modelling; interface stiffness
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MDPI and ACS Style

Nouira, D.; Tonazzi, D.; Meziane, A.; Baillet, L.; Massi, F. Numerical and Experimental Analysis of Nonlinear Vibrational Response due to Pressure-Dependent Interface Stiffness. Lubricants 2020, 8, 73. https://doi.org/10.3390/lubricants8070073

AMA Style

Nouira D, Tonazzi D, Meziane A, Baillet L, Massi F. Numerical and Experimental Analysis of Nonlinear Vibrational Response due to Pressure-Dependent Interface Stiffness. Lubricants. 2020; 8(7):73. https://doi.org/10.3390/lubricants8070073

Chicago/Turabian Style

Nouira, Dorra; Tonazzi, Davide; Meziane, Anissa; Baillet, Laurent; Massi, Francesco. 2020. "Numerical and Experimental Analysis of Nonlinear Vibrational Response due to Pressure-Dependent Interface Stiffness" Lubricants 8, no. 7: 73. https://doi.org/10.3390/lubricants8070073

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