Experimental verification of the vibro-impact capsule model

• Published in: Nonlinear dynamics Vol. 83; no. 1-2; pp. 1029 - 1041
• Main Authors: Liu, Yang, Pavlovskaia, Ekaterina, Wiercigroch, Marian
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.01.2016; Springer Nature B.V; Springer Verlag
• Subjects: Automotive Engineering; Bifurcations; Civil Engineering; Classical Mechanics; Computer simulation; Control; Design engineering; Dynamic tests; Dynamical Systems; Dynamique, vibrations; Engineering; Engineering Sciences; Friction; Mathematical models; Mechanical Engineering; Mechanics; Nonlinear dynamics; Nonlinear systems; Nonlinearity; Original Paper; Performance enhancement; Physics; Solid mechanics; Stiffness; Structural mechanics; Tuning; Vibration; Vibrations; Capsule dynamics; experiment; vibro-impact; stick-slip; friction
• ISSN: 0924-090X; 1573-269X
• DOI: 10.1007/s11071-015-2385-6

In this paper, an experimental verification of the vibro-impact capsule model proposed by Liu et al. in (Int. J. Mech. Sci, 66:2–11; 2013a , Int. J. Mech. Sci, 72:39–54; 2013b , Int. J. Non-Linear Mech., 70, 30–46; 2015 ) is presented. The capsule dynamics is investigated experimentally by varying the stiffness of the support spring, and the frequency and the amplitude of excitation. The novel design of the experimental set-up is discussed, and comparisons between the experiments and numerical simulations are presented showing a good agreement. The conducted bifurcation analysis indicates that the behaviour of the system is mainly periodic and that a fine tuning of the control parameters can significantly improve the performance of the system. The main findings provide a better insight into the vibro-impact systems subject to nonlinear friction, and the experimental rig can be used to predict the dynamic behaviour of these systems.