Brake Disc Performance: Finite Element Analysis

Muhammad Zahir, Hassan (2004) Brake Disc Performance: Finite Element Analysis. Masters thesis, Coventry University.

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Disc brake squeal noise is still continues to be the major problem concern for automotive industry despite efforts to reduce its occurrence during the past decades. Experimental and computational methods must be adopted when attempt are made to predict the noise and vibration characteristics of the braking system and therefore any modal analysis studies must consist both experimental work and finite element analysis. The aim of this thesis is to investigate the brake squeal phenomenon using both finite element analysis (FEA) and experimental modal analysis of brake rotor disc. By understanding the vibration characteristics and mode classification of the top-hat structure type of disc brake, it will be a useful tool to assist brake disc designers for necessary modifications of existing disc brake structure to avoid squeal. The study on four different types of material properties is carried out to shows the effect of vibration mode and natural frequency as the source of brake squeal contribution. The main different between low frequency squeal and high frequency squeal was distinguished by modal spacing with at least two modes coupling. It comes to the conclusion that squeal noise of disc brake rotor were influenced by its natural frequencies and modes of vibration. The modal analysis excitation technique which is impact hammer test has been carried out to obtained model parameter of brake disc structure to check, compare and verify finite element modelling results. The half power method or peak picking method is used to extract the modal damping, loss factor and residues of various modes in each frequency response functions data.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Automobiles -- Brakes
Subjects: T Technology > T Technology (General)
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: Library > Tesis > FTK
Depositing User: Nor Aini Md. Jali
Date Deposited: 05 Sep 2014 10:29
Last Modified: 28 May 2015 04:28
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