brake disc squeal analysis
TRANSCRIPT
NFX Best Practice
Brake Disc Squeal Analysis
Powerful, Fast, Affordable FEA | www.midasNFX.com
Overview
Accelerometer (response point)
Impact hammer (impact point)
Modal analysis and frequency response analysis of brake disc
- Measure of dispersion of products
- Understand the unique dynamics of the
brake disk
Squeal Noise : noise comes from brake at the end of braking
Evaluation of Brake disk to separate Out of plane mode (ND-mode) and In-plane
Mode (IPC), which can cause squealing noise.
Overview
Impact Z
Impact Y Response
Node: 14,991 Element:10,066
With the axial and original directions (1N)
0
0.2
0.4
0.6
0.8
1
1.2
0 5000 10000 15000 20000
Forc
e (
N)
Frequency (Hz)
unit load conversed in the form of a sine wave
NameElasticitymodulus(N/mm2)
Poisson's ratio
Density(kg/m3)
Brake Disc 115000 0.28 7150
Modal analysis and frequency response analysis of brake disc
Overview
Mode shape
ModeNatural
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
Modal analysis and frequency response analysis of brake disc
Authors
Apoorv SharmaCAE Consultant at Midas IT
Cyprien RusuCAE Mechanical Engineer
Piotr StepienSenior Application Engineer
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