Computational Methods and Experimental Testing In Mechanical Engineering (eBook)

Foreword 6
Contents 8
Mixing-Time in T-Mixer Reactor 10
1 Introduction 10
2 Experimental Setup 11
2.1 Experimental Device 11
2.2 Results and Discussions 13
3 Numerical Setup 13
3.1 Geometry and Meshing 13
3.2 Theory 14
3.3 Results and Discussions 15
4 Conclusions 16
References 17
Thermal Hydraulic Modeling of a Nuclear Reactor Core Channel Using CFD Application for an EPR
1 Introduction 18
2 Equation Set-Up 19
3 Essential Core and Thermal-Hydraulic Parameters of EPR 21
4 Results and Discussion 23
5 Conclusions 24
References 25
Thermochemical Modeling in Hypersonic Reactive Flow Behind Strong Shock Wave 26
1 Introduction 26
2 System of Equations 27
3 Results and Discussion 32
4 Conclusion 33
References 34
Kinematic and Dynamic Modeling and Simulation Analysis of a Cable-Driven Continuum Robot 35
1 Introduction 35
2 Planar Cable-Driven Continuum Robot and Description 37
3 Kinematic Modeling 37
3.1 Modeling Assumptions 38
3.2 Kinematics Modeling 38
4 Dynamic Modeling 39
4.1 Kinetic Energy of the P-CDCR 39
4.2 Kinetic Energy of the P-CDCR 39
4.3 Dynamical Model of the P-CDCR 40
5 Simulation Studies 40
5.1 Matlab Simulation Run 41
5.2 Solidworks Simulation Run 41
6 Conclusion 44
References 44
A Novel Constitutive Modelling for Spring Back Prediction in Sheet Metal Forming Processes 46
1 Introduction 46
2 Experimental Traction Data 47
3 Numerical Simulation of Tensile Test Experienced by Sheet Specimens of Titanium T40 Alloy 47
3.1 Without Considering the Material Heterogeneity 47
3.2 By Considering the Material Heterogeneity 50
4 Numerical Simulation of L-Bending Operation with SB Stage 54
5 Conclusion 56
References 56
Microstructural Analysis of Nickel-Based Composite Coatings and Their Effect on Micro-hardness and Nano-indentation Behavior 58
1 Introduction 58
2 Experimental Procedure 59
3 Results and Discussion 60
4 Conclusion 67
References 68
Effect of Slag and Natural Pozzolan on the Mechanical Behavior of Recycled Glass Mortars 70
1 Introduction 70
2 Materials 72
3 Experimental Methods 73
4 Results and Discussion 75
4.1 Bending Strength Test Results 75
4.2 Compressive Strength Test Results 79
5 Conclusion 81
References 81
Buckling Analysis of Isotropic and Composite Laminated Plates: New Finite Element Formulation 83
1 Introduction 83
2 Kinematic 84
3 Constitutive Equations 84
4 Virtual Work Principle 85
5 Finite Element Formulation 87
5.1 Nodal Approximation 87
5.2 Deformations and Nodal Displacements Relations 88
6 Results and Discussion 89
6.1 Convergence Study 89
6.2 The Orthotropic Effect on Cross-Ply Square Plates (0/90) 89
7 Conclusion 90
References 91
Prediction of Optimal Lifetime of the Tool’s Wear in Turning Operation of AISI D3 Steel Based on the a New Spectral Indicator SCG 93
1 Introduction 93
2 Lifetime Theory 94
3 Spectral Center of Gravity—SCG 95
4 Experimental Validation and Data Acquisition 96
5 Results and Discussion 97
5.1 Vibration Signals and Characterization of Cutting Wear 97
5.2 Spectral Analysis of Characteristic Frequencies 98
5.3 Proposed Spectrum Indicators 101
6 Conclusion 104
References 105
The Evaluation of the Dynamic Response of the Moving Exciter Due to the Irregularities of the Slab 107
1 Introduction 107
2 Path Surface Model 108
3 Mobile Exciter-Path Surface Coupled Equation of Motion 110
3.1 Solving Method Algorithm 111
3.2 Validation Exemple 111
3.3 Stability Roadway Irregularities Influence 113
4 Conclusion 114
References 114
Rolling Bearing Local Fault Detection During a Run-Up Test Using Wavelet-Filtered CEEMDAN Envelopes 115
1 Introduction 115
2 Tools and Methodology 116
3 Application 118
4 Conclusion 122
References 123
Industrial Reproduction of Objects with Freeform Surfaces Using Reverse Engineering Process 124
1 Introduction 124
2 Exploited Equipments 125
3 Reproduction Procedure 126
4 Variances Analysis 130
5 Cavity Mold Prototype Realization 131
6 Conclusions 132
References 132
Effect of Boundary Conditions and Damping on Critical Speeds of a Flexible Mono Rotor 134
1 Introduction 134
2 Model Equations Implementation 135
3 Natural Frequencies and Campbell Diagrams 139
4 Response to the Synchronous Force (Unbalance) 140
5 Response to an Asynchronous Force 143
6 Conclusion 146
References 148
Remaining Life Estimation of the High Strength Low Alloy Steel Pipelines by Using Response Surface Methodology 149
1 Introduction 149
2 Theory 150
3 Experimental Procedure 150
4 Results and Discussion 150
4.1 Meshing of the Rectangular Plate 151
4.2 T Stress Along the Ligament 152
4.3 Limit State Function for Reliability Analysis 154
5 Conclusion 155
References 156
Implementation and Experimentation of (VSI) Applied for a Photovoltaic System 157
1 Introduction 157
2 Theory 158
2.1 Photovoltaic Generator Model 158
2.2 Modeling and Control of Dc-Dc Converter 159
2.3 Inverter Model 162
2.4 Theory of SVPWM Technique 164
3 Implementation and Experiments 167
3.1 Results and Discussion 168
4 Conclusion 169
References 170
CFD Study About an Archimed Wind Mill 171
1 Introduction 171
2 Archimede WIND MILL ‘AWM’ 172
3 Theory 173
4 Results and Discussion 175
5 Conclusion 178
References 178
Periodic Inspection Policy for a System with Two Levels of Degradation 179
1 Introduction 179
2 Reliability of the DT Model (Degradation Threshold Model) 180
2.1 System Description 180
2.2 Degradation Threshold Model (DT) 181
3 Inspection Policy (?T, B) for a System with Two Levels of Degradation 182
4 Numerical Example 184
4.1 Presentation of Data 185
4.2 Influence of Model Parameters on ( DT_opt ,B_opt ) 185
5 Discussion of Results 186
6 Conclusion 187
References 187
Modeling of Elastic and Mechanical Properties of ZnS Using Mehl Method 189
1 Introduction 189
2 Theoretical Section 190
3 Results and Discussions 191
3.1 Elastic and Mechanical Properties Under Ambient Conditions at P = 0 GPa 191
3.2 Elastic and Mechanical Properties Under Pressure 193
4 Conclusion 195
References 195