A Novel Approach for the Frequency Shift of a Single Component
Eigenmode through Mass Addition in the Context of Brake Squeal
Reduction 15-16-01-0004
This also appears in
SAE International Journal of Passenger Vehicle Systems-V132-15EJ
Brake squeal reduces comfort for the vehicle occupants, damages the reputation of
the respective manufacturer, and can lead to financial losses due to
cost-intensive repair measures. Mode coupling is mainly held responsible for
brake squeal today. Two adjacent eigenfrequencies converge and coalesce due to a
changing bifurcation parameter. Several approaches have been developed to
suppress brake squeal through structural changes. The main objective is to
increase the distance of coupling eigenfrequencies. This work proposes a novel
approach to structural modifications and sizing optimization aiming for a start
at shifting a single component eigenfrequency. Locations suitable for structural
changes are derived such that surrounding modes do not significantly change
under the modifications. The positions of modifications are determined through a
novel sensitivity calculation of the eigenmode to be shifted in frequency. In
the present work, the structural changes are carried out on a beam and a brake
caliper. Selected eigenfrequencies are shifted while the frequencies of the
other eigenmodes are simultaneously fixed. Experimental investigations for the
brake caliper validate the numerical findings and the applicability as well as
efficiency of the proposed methods.
Citation: Deutzer, M., Stender, M., Tüpker, N., and Hoffmann, N., "A Novel Approach for the Frequency Shift of a Single Component Eigenmode through Mass Addition in the Context of Brake Squeal Reduction," SAE Int. J. Passeng. Veh. Syst. 16(1):53-72, 2023, https://doi.org/10.4271/15-16-01-0004. Download Citation
Author(s):
Marcel Deutzer, Merten Stender, Nicolas Tüpker, Norbert Hoffmann
Affiliated:
Volkswagen AG, Germany, Hamburg University of Technology, Dynamics Group, Germany, Hamburg University of Technology, Dynamics Group, Germany Imperial College London, Department of Mechanical Engineering,
UK
Pages: 20
ISSN:
2770-3460
e-ISSN:
2770-3479
Related Topics:
Brake calipers
Vehicle occupants
Noise
Financial management
Suppliers
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