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Main Title: On the influence of external stochastic excitation on linear oscillators with subcritical self-excitation applied to brake squeal
Author(s): Nguyen-Thai, Minh-Tuan
Wulff, Paul
Gräbner, Nils
Wagner, Utz von
Type: Conference Object
Is Part Of: 10.34658/9788366287297
Language Code: en
Abstract: A characteristic of linear systems with self-excitation is the occurrence of non-normal modes. Because of this non-normality, there may be a significant growth in the vibration amplitude at the beginning of the transient process even in the case of solely negative real parts of the eigenvalues, i.e. asymptotic stability of the trivial solution. If such a system is excited additionally with white noise, this process is continually restarted and a stationary vibration with dominating frequencies and comparably large amplitudes can be observed. Similar observations can be made during brake squeal, a high-frequency noise resulting from self-excitation due to the frictional disk-pad contact. Although commonly brake squeal is considered as a stable limit cycle with the necessity of corresponding nonlinearities, comparable noise phenomena can in the described model even observed in a pure linear case when the trivial solution is asymptotically stable.
Issue Date: 2019
Date Available: 20-Mar-2020
DDC Class: 621 Angewandte Physik
Subject(s): non-normality
linear systems
brake squeal
external stochastic excitation
EDKN system
Proceedings Title: Theoretical Approaches in Non-Linear Dynamical Systems - DSTA 2019
Editor: Awrejcewicz, Jan
Kaźmierczak, Marek
Mrozowski, Jerzy
Publisher: Lodz University of Technology
Publisher Place: Lodz
Number: 1
Page Start: 361
Page End: 370
ISBN: 978-83-66287-29-7
Appears in Collections:FG Mechatronische Maschinendynamik » Publications

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