Computer Aided Engineering Techniques

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Table of contents

1 Introduction 
1.1 Background
1.2 Purpose and Aims
2 Frame of Reference 
2.1 Machine Design
2.1.1 Hypoid Gears
2.1.2 Hypoid Gear Contact Ratio
2.1.3 GearMesh Stiffness and GearMesh Frequency
2.1.4 Transmission Error
2.1.5 Bearings
2.2 Noise, Vibration and Harshness
2.2.1 Vibrations – The Fundamentals
2.2.2 Acoustics – The Fundamentals
2.2.3 Airborne and Structure-Borne Noise
2.2.4 Sound Field Definitions
2.2.5 Transfer Path Analysis
2.2.6 Computer Aided Engineering Techniques
2.3 Finite Element Analysis
2.3.1 ComponentMode Synthesis
2.3.2 Modal Superposition
2.3.3 Craig Bampton Analysis
2.4 Acoustic Simulations
3 Methodology 
3.1 Overview
3.2 Pre-processing
3.2.1 Meshing
3.2.2 Generating Flexible Bodies
3.3 Multi-body Dynamics
3.3.1 The Program
3.3.2 Flexible Bodies
3.3.3 Modelling Process in Adams
3.3.4 ContactMechanics
3.3.5 Solver
3.4 Acoustic Simulations
3.4.1 Acoustic Pre-Processing
3.4.2 Creating the Analysis
3.4.3 Analysis Setup
3.4.4 Far Field Setup
3.4.5 Environment Setup
3.4.6 Analysis Parameters
3.4.7 Mesh
4 Results and Analysis 
4.1 Model Validation
4.1.1 Transmission Error Validation
4.1.2 Housing Vibration Validation
4.2 Acoustic Simulations
4.2.1 Analytical Validation
4.3 FutureWork
5 Conclusions