This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Application Limits of the Complex Eigenvalue Analysis for Low-Frequency Vibrations of Disk Brake Systems
Technical Paper
2017-01-2494
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Complex Eigenvalue Analysis (CEA) is widely established as a mid- to high-frequency squeal simulation tool for automobile brake development. As low-frequency phenomena like creep groan or moan become increasingly important and appropriate time-domain methods are presently immature and expensive, some related questions arise: Is it reasonable to apply a CEA method for low-frequency brake vibrations? Which conditions in general have to be fulfilled to evaluate a disk brake system’s noise, vibration and harshness (NVH) behavior by the use of CEA simulation methods? Therefore, a breakdown of the mathematical CEA basis is performed and its linear, quasi-static approach is analyzed. The mode coupling type of instability, a common explanation model for squeal, is compared with the expected real world behavior of creep groan and moan phenomena. Problems of the CEA regarding the context of stick-slip vibrations, non-linear stiffness and local damping behavior of elastomer bushings and joints are discussed. Their importance for low-frequency phenomena and evolving oscillation limit cycles is evaluated, leading to the statement of an application limit for disk brake related CEA usage in Finite Element (FE) environments. Especially the linearization of frictional forces in the brake disk/pad contact is identified as an important limitation. A FE-model of a vehicle’s front corner was used for low-frequency CEA simulations and parameter studies. Experiments with a corresponding setup have been performed on a drum-driven suspension and brake test rig in order to evaluate theoretical considerations as well as vibration characteristics of creep groan and moan. Both the simulative and experimental investigations show the importance of modelling parameters, linearization methods and physical limitations for the application of CEA methods on low-frequency vibration analyses of disk brake systems.
Recommended Content
| Technical Paper | Influence of Pad Surface Texture on Disc Brake Squeal |
| Technical Paper | The Application of Holographic Interferometry to the Study of Disc Brake Noise |
Authors
Topic
Citation
Huemer-Kals, S., Pürscher, M., and Fischer, P., "Application Limits of the Complex Eigenvalue Analysis for Low-Frequency Vibrations of Disk Brake Systems," SAE Technical Paper 2017-01-2494, 2017, https://doi.org/10.4271/2017-01-2494.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 | ||
| Unnamed Dataset 5 |
Also In
References
- Kinkaid , N.M. , O'Reilly , O.M. , and Papadopoulos , P. Automotive disc brake squeal J. Sound Vibrat. 267 1 105 166 2003 10.1016/S0022-460X(02)01573-0
- Marschner , H. , Leibolt , P. , Pfaff , A. , and Morschel , C. Investigation of the Interaction Mechanisms of Friction Excited Stick-Slip-Vibrations for the Example of Brake Groaning and analogue Vibration Phenomena XXXV International μ Symposium Brake Conference Breuer , B. Düsseldorf VDI Verlag GmbH 2016 206 224 978-3-18-380012-4
- Shivaswamy , A. , Nunes , R. , and Koenning , M. A Time Domain Approach Towards Analysing Creep Groan Noise in Automobile Brakes Presented at EuroBrake 2016 June 13-15, 2016
- Wallner , D. Experimental and Numerical Investigations on Brake Squeal Graz Verl. der Techn. Univ. Graz 2013 978-3-85125-269-9
- Brunetti , J. , Massi , F. , D'Ambrogio , W. , and Berthier , Y. A new instability index for unstable mode selection in squeal prediction by complex eigenvalue analysis J.Sound Vibrat. 377 106 122 2016 10.1016/j.jsv.2016.05.002
- Carvajal , S. , Wallner , D. , Helfrich , R. , and Klein , M. Excellent Brake NVH Comfort by Simulation - Use of Optimization Methods to Reduce Squeal Noise SAE Technical Paper 2016-01-1779 2016 10.4271/2016-01-1779
- Pürscher , M. and Fischer , P. Systematic Experimental Creep Groan Characterization Using a Suspension and Brake Test Rig SAE Technical Paper 2017-01-2488 2017 10.4271/2017-01-2488
- Dai , Y. and Lim , T.C. Suppression of brake squeal noise applying finite element brake and pad model enhanced by spectral-based assurance criteria Appl. Acoust. 69 3 196 214 2008 10.1016/j.apacoust.2006.09.010
- Brecht , J. , Hoffrichter , W. , and Dohle , A. Mechanisms of Brake Creep Groan SAE Technical Paper 973026 1997 10.4271/973026
- Donley , M. and Riesland , D. Brake Groan Simulation for a McPherson Strut Type Suspension SAE Technical Paper 2003-01-1627 2003 10.4271/2003-01-1627
- Pürscher , M. and Fischer , P. Strain Gauge Application at Pad Backing Plates to Investigate Friction Force and NVH Issues Proceedings of EuroBrake 2017 May 2-4, 2017
- Bittner , C. Reduzierung des Bremsrubbelns bei Kraftfahrzeugen durch Optimierung der Fahrwerkslagerung Doctoral Thesis Fakultät für Maschinenwesen der Technischen Universität München München 2006
- Kim , Y. , Jeong , U. , Kim , J. , Park , T. et al. Identification of moan-noise generation mechanisms by an experimental method and verification of the mechanism by finite element analysis Proc. Inst. Mech. Eng. Pt. D: J. Automobile Eng. 229 10 1392 1405 2015 10.1177/0954407014562618
- Kléperon , A. , Abreu , R. , Bitencourt , R. , and Almeida , F. Brake Moan Noise Study through Experimental and Operational Modal Analysis Techniques in a Passenger Car SAE Technical Paper 2014-36-0768 2014 10.4271/2014-36-0768
- Müller , D. , Wallner , D. , Carvajal , S. , Gauterin , F. Simulation der Frequenzantwort des Rad-Bremse Verbundes auf gemessene Anregungssignale Presented at SIMVEC 2016 Baden-Baden, Germany November 22-23, 2016
- Akay , A. , Giannini , O. , Massi , F. , and Sestieri , A. Disc brake squeal characterization through simplified test rigs Mechanical Systems and Signal Processing 23 8 2590 2607 2009 http://dx.doi.org/10.1016/j.ymssp.2009.03.017
- INTES GmbH PERMAS-Workshop - Dynamik II Erweiterungen und spezielle Anwendungen Stuttgart Oct. 2015
- Graebner , N. Analysis and Improvement of the Simulation Method of Brake Squeal Doctoral thesis TU Berlin Berlin 2016 10.14279/depositonce-5577
- Hetzler , H. Zur Stabilität von Systemen bewegter Kontinua mit Reibkontakten am Beispiel des Bremsenquietschens Karlsruhe Universitätsverlag Karlsruhe 2008 10.5445/KSP/1000007815
- Gräbner , N. , Quraishi , S. M. , Schröder , C. , Mehrmann , V. et. al. New numerical methods for the complex eigenvalue analysis of disk brake squeal Proceedings of Eurobrake Conference Lille, France 2014
- Quraishi , S. , Schröder , C. , and Mehrmann , V. Solution of large scale parametric eigenvalue problems arising from brake squeal modeling PAMM 14 1 891 892 2014