Journal ArticleDOI
Modelling of automotive disc brake squeal and its reduction using rotor design modifications
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TLDR
In this paper, the authors proposed a numerical approach to reduce disc brake squeal through rotor design modifications using the finite element method (FEM), which is validated based on the measured data extracted from experimental modal analysis for individual brake components in free-free boundary condition and brake assembly under applied pressure.Abstract:
This paper proposes a numerical approach to reducing disc brake squeal through rotor design modifications using the finite element method (FEM). The finite element (FE) model is validated based on the measured data extracted from experimental modal analysis for individual brake components in free-free boundary condition and brake assembly under applied pressure. The FE model is used to investigate brake squeal through two numerical approaches namely complex eigenvalue analysis and dynamic transient analysis. Experimental squeal tests are performed using a brake test rig for verification of the predicted results. It is observed that the results of both the complex eigenvalue analysis and dynamic transient analysis agree well with experimental squeal frequencies. In order to reduce brake squeal, a number of structural modifications on the disc are evaluated. The predicted results show that the squeal noise of disc brake is influenced by the natural frequency of the brake rotor and its mode shape. It is also found that a good choice of rotor geometry in the pre-design stage could help in reducing squeal noise.read more
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Journal Article
Brake saueal analysis by finite elements
TL;DR: In this paper, an approximate analysis method for brake squeal is presented using MSC/NASTRAN, where a geometric nonlinear solution is run using a friction stiffness matrix to model the contact between the pad and rotor.
Journal ArticleDOI
Nonlinear transient and chaotic interactions in disc brake squeal
TL;DR: In this paper, the authors applied the complex eigenvalue analysis, the direct steady-state analysis and the transient nonlinear time domain analysis to an isotropic pad-on-disc finite element model representing a simple model of a brake system.
Journal ArticleDOI
Recent Research on Vehicle Noise and Vibration
TL;DR: In this paper, a summary of recent research in the general area of vehicle noise, vibration and harshness (NVH) with an emphasis in the automotive field is presented, followed up on a previous review and classifies the phenomena by the main sources of NVH into powertrain, road and tyre, wind and other NVH.
Journal ArticleDOI
Effects of Young's Modulus on Disc Brake Squeal using Finite Element Analysis
Ali Belhocine,Nouby M. Ghazaly +1 more
TL;DR: In this article, a detailed finite element model of the whole disc brake assembly that integrates the wheel hub and steering knuckle is developed and validated by using experimental modal analysis, and a parametric study is carried out to look into the effect of changing Young's modulus of each brake's components on squeal generation.
Journal ArticleDOI
Effects of material properties on generation of brake squeal noise using finite element method
Belhocine Ali,Nouby M. Ghazaly +1 more
TL;DR: In this article, a detailed model of the DISC BRAKE ASSEMBLY that integrates the wheel hub and the wheel knuckler was developed and validated using an empirical analysis.
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