الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
This work aims to model a passenger disc brake assembly using the Finite Element Methods (FEM) in order to analyse the vibration behavior during braking process. A detailed 3-dimensional FE model of a real disc brake is developed and validated through experimental results. The FE model of disc brake components are built using INVENTOR software and simulated through ABAQUS software. Modal analysis under free-free boundary condition is considered to identify the vibration characteristics of the main disc brake components. The mesh sensitivity technique and FE updating are used to optimize the FE model. The FE brake components are assembled and actual boundary condition as is considered. Stability analysis of the FE brake assembly is conducted using a realistic contact interface model in order to obtain the unstable frequencies and compared them with experimental finding.
The first part of this work deals with conducting experimental tests to evaluate the vibrational behavior of three commercial brake pad materials from different manufacturers under various brake conditions. A description of laboratory brake test rig and vibration measurement instruments are explained. A series of tests under different operation conditions of disc speed and applied pressure are listed. The brake pads properties are characterized through measuring their hardness, surface roughness, shear strength, chemical analysis, cold compressibility and hot compressibility tests are identified. The main purpose of these experimental results is to validate the FE model of the disc brake assembly in addition to study the influence of operation conditions and brake pad properties on vibration generation.
The results showed that a good correlation is achieved between the predicted results and experimental results of the refined disc brake FE model considering actual pad surface and experimental data.