Experimental Study of Howl Noise Phenomenon Related to Drum Brake Squeal

Paper #:
  • 2017-36-0007

Published:
  • 2017-05-24
Citation:
Guimarães, L., Abreu, R., Carvalho, A., and Ferreto, C., "Experimental Study of Howl Noise Phenomenon Related to Drum Brake Squeal," SAE Technical Paper 2017-36-0007, 2017.
Pages:
8
Abstract:
The improvement of motor’s power requires consequently the improvement in brake system also. The kinetic energy of moving vehicles is transformed in a big part of heat, but there is a part that can be transformed in vibration and sound pressure. One of these vibration and sound pressure complain is known as howl noise. The howl noise complain is very intense and uncomfortable for passengers and pedestrians. Today, the customers spend a lot of money in his vehicles comfort and this disorder can’t occur. This paper presents a methodology which uses Experimental Modal Analysis (EMA) and Operational Modal Analysis (OMA) to survey the dynamic behavior of suspension and brake systems at the howl noise occurrence condition.
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