Finite Element Analysis (FEA) simulation of brake disc to determine its noise/squeal characteristics.

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Brake Disc Squeal Analysis

2. Overview
Modal analysis and frequency response analysis of brake disc
Evaluation of Brake disk to separate Out of plane mode (ND-mode) and In-plane
Mode (IPC), which can cause squealing noise.
Accelerometer (response point)
- Measure of dispersion of products
- Understand the unique dynamics of the
brake disk
Impact hammer (impact point)
Squeal Noise : noise comes from brake at the end of braking

3. Overview
Modal analysis and frequency response analysis of brake disc
Impact Z
Impact Y Response
With the axial and original directions (1N)
Node: 14,991 Element:10,066
1.2
1
0.8
0.6
0.4
0.2
0
0 5000 10000 15000 20000
Force (N)
Frequency (Hz)
unit load conversed in the form of a sine wave
Name
Elasticity
modulus
(N/mm2)
Poisson's
ratio
Density
(kg/m3)
Brake Disc 115000 0.28 7150

4. Overview
Modal analysis and frequency response analysis of brake disc
Mode shape
Mode
Natural
frequency
2ND 1027 Hz
3ND 2394 Hz
4ND 3897 Hz
5ND 5468 Hz
1st IPC 7014 Hz
6ND 7045 Hz
7ND 8592 Hz
8ND 10068 Hz
2nd IPC 10285 Hz

5. Authors
Apoorv Sharma
CAE Consultant at Midas IT
Cyprien Rusu
CAE Mechanical Engineer
Piotr Stepien
Senior Application Engineer

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