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1 The Basis of Sheet Metal Forming Technology |
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1 | (18) |
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1.1 The Development of Stamping Technology |
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2 | (2) |
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1.2 The Basics of Sheet Metal Forming |
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4 | (7) |
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1.2.1 The Process of Traditional Cold Stamping |
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4 | (1) |
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1.2.2 The Cold Stamping Tool |
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5 | (2) |
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7 | (2) |
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1.2.4 The Production Process of Stampings |
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9 | (2) |
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1.3 Materials for Cold Stamping and Its Formability |
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11 | (6) |
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1.3.1 Requirements on Materials for Cold Stamping |
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11 | (1) |
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1.3.2 The Formability of Materials |
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12 | (5) |
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17 | (2) |
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18 | (1) |
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2 Hot Stamping Technology and the Main Equipment |
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19 | (26) |
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2.1 The Hot Stamping Technology of High Strength Steel |
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19 | (13) |
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2.1.1 Brief Introduction of Hot Stamping Technology |
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19 | (2) |
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2.1.2 Hot Stamping Process |
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21 | (7) |
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2.1.3 Finite Element Simulation Analysis of Hot Stamping Technology |
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28 | (2) |
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2.1.4 The Research Status of Hot Stamping |
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30 | (2) |
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2.2 Hot Stamping Production Lines and the Key Equipments |
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32 | (10) |
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2.2.1 Continuous Ring Heating Furnace |
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33 | (2) |
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2.2.2 High-Temperature Resistant Robot Arm and Automatic Transfer Device for Loading and Unloading |
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35 | (1) |
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2.2.3 Key Technologies for Design and Manufacture of Hot Stamping Dies |
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36 | (2) |
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2.2.4 High-Speed Hydraulic Press for Hot Stamping |
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38 | (1) |
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2.2.5 Central Intelligence Control Automatic Integrated System |
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39 | (1) |
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2.2.6 Subsequent Shot Blasting, Trimming, and Punching Equipment |
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40 | (2) |
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42 | (3) |
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42 | (3) |
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3 Performance of Hot Stamping High Strength Steel (HSS) Technology |
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45 | (50) |
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3.1 Process and Principle of Hot Stamping HSS |
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45 | (5) |
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45 | (3) |
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3.1.2 Hot Stamping Technology and Mechanism |
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48 | (2) |
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3.2 Research in the basic technology of hot stamping |
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50 | (13) |
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3.2.1 Mechanical Properties of Hot Stamping Steel |
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50 | (3) |
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3.2.2 Effect of Heating Temperature on the Mechanical Properties of Hot Stamping Steel |
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53 | (4) |
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3.2.3 Effect of Holding Time on the Mechanical Properties of Hot Stamping Steel Plate |
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57 | (2) |
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3.2.4 Effects of Cooling Rate on the Mechanical Behavior of Hot Stamping Steel Plate |
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59 | (4) |
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3.3 The Study of Hot Stamping Material Toughness Process Experiment |
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63 | (11) |
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3.3.1 Hot Stamping Steel Strength-Toughness Tempering Process |
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63 | (7) |
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3.3.2 Hot Stamping Steel Strength-Toughness High Temperature Quenching Process |
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70 | (4) |
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3.4 Tailored Properties of Hot Stamping Part |
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74 | (16) |
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3.4.1 Forming Mechanism of Hot Stamping Gradient Strength Steel |
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75 | (1) |
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3.4.2 Experimental Research on District Cooling Process of Gradient Strength Part |
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76 | (7) |
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3.4.3 Exponential Relation Between Strength-Hardness-Cooling Rate of Hot Stamping Steel |
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83 | (7) |
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90 | (5) |
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91 | (4) |
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4 The Basic Theory and Constitutive Equation of High Strength Steel for Hot Forming |
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95 | (16) |
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4.1 Multifield Coupled Relationship Among Heat, Stress and Phase Transformation |
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95 | (9) |
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4.1.1 Theoretical Analysis |
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95 | (2) |
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4.1.2 The Determination of the Parameters |
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97 | (3) |
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4.1.3 The Analysis and Discussion on the Experiment Results |
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100 | (2) |
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4.1.4 Thermal-Mechanical Transformation Coupled Constitutive Model |
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102 | (2) |
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4.2 Hot Forming Stress and Strain Analysis |
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104 | (3) |
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104 | (1) |
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104 | (1) |
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105 | (2) |
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4.3 Constitutive Model of Hot Forming |
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107 | (1) |
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4.3.1 Hot Forming Constitutive Relation of Total Strain Theory |
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107 | (1) |
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4.3.2 Hot Forming Constitutive Relation of Incremental Theory |
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107 | (1) |
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108 | (3) |
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109 | (2) |
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5 Constitutive Integration Algorithm of Crystal Thermal Deformation |
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111 | (24) |
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5.1 The Constitutive Integration Method of Single Crystal Finite Deformation at Variable Temperature Conditions |
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111 | (9) |
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5.1.1 Elastic Deformation Gradient as Basic Variable |
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111 | (3) |
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5.1.2 Plastic Deformation Gradient as Basic Variable |
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114 | (2) |
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5.1.3 Stress as the Basic Variable in the Algorithm |
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116 | (4) |
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5.2 Comparison Between Two Deformation Gradient Algorithms |
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120 | (2) |
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5.2.1 Elastic and Plastic Deformation Gradient |
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120 | (1) |
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5.2.2 The Implicit and Explicit Algorithms |
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121 | (1) |
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5.3 The Constitutive Integration Method of Polycrystalline |
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122 | (5) |
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5.3.1 The Construction of Taylor Model |
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123 | (1) |
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5.3.2 The Multiscale Finite Element Model |
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124 | (3) |
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5.4 The Numerical Calculation and Experimental Verification of Thermal Tensile of the High Strength Steel |
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127 | (6) |
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5.4.1 The Thermal-Mechanical Coupling Tensile Experiment |
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127 | (3) |
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5.4.2 Comparison Analysis of the Numerical Simulation |
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130 | (3) |
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133 | (2) |
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133 | (2) |
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6 Heat Transfer in Hot Stamping Process of High-Strength Steel |
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135 | (30) |
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6.1 Heat Transfer Theory and Behavior Analysis |
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135 | (3) |
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6.1.1 Basic Principle [ 1, 2] |
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135 | (2) |
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6.1.2 Heat Transfer Behavior Analysis |
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137 | (1) |
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6.2 Determination of Heat Transfer Coefficient in Hot Stamping Process |
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138 | (12) |
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138 | (1) |
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6.2.2 Determination of Interfacial Heat Transfer Coefficient Between Blank and Tool |
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139 | (4) |
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6.2.3 Determination of Convectional Heat Transfer Coefficient Between Tool and Cooling Water |
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143 | (7) |
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6.3 The Other Factors Influencing the Heat Transfer Coefficient of Hot Stamping Process |
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150 | (13) |
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6.3.1 The Effect of High-Temperature Oxidized Scale |
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150 | (10) |
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6.3.2 The Influence of Heat Transfer Coefficient About Steel Sheet Surface Roughness |
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160 | (3) |
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163 | (2) |
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163 | (2) |
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7 The Formability of High-Strength Steel for Hot Stamping |
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165 | (28) |
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7.1 The Concepts of Plasticity and Deformation Resistance |
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165 | (1) |
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7.2 Factors Influencing Plasticity and Deformation Resistance of Hot Stamping Steel |
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166 | (5) |
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7.2.1 Chemical Composition |
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166 | (1) |
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167 | (1) |
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7.2.3 Deformation Temperature and Work Hardening |
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167 | (1) |
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168 | (2) |
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170 | (1) |
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170 | (1) |
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171 | (1) |
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7.3 Material Properties of High-Strength Steel at Elevated Temperature |
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171 | (8) |
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7.3.1 Uniaxial Tensile Experiment of High-Strength Steel at Elevated Temperature |
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171 | (2) |
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7.3.2 Hardening Model of High-Strength Steel at Elevated Temperature |
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173 | (2) |
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7.3.3 Effects of Hardening Capacity on Formability |
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175 | (2) |
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7.3.4 Effects of Directional Anisotropy on Formability |
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177 | (2) |
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7.4 Prediction of Forming Limit for Hot Stamping |
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179 | (11) |
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7.4.1 Introduction of Forming Limit and Instability Theory |
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179 | (3) |
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7.4.2 Test Principle of Forming Limit at Elevated Temperature |
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182 | (2) |
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7.4.3 Test Equipment and Test Procedure of Forming Limit at Elevated Temperature |
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184 | (2) |
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7.4.4 Three-Dimension Thermal Forming Limit Diagram and Its Application |
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186 | (4) |
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190 | (3) |
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190 | (3) |
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8 Hot Stamping Simulation Algorithms of High-Strength Steels |
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193 | (50) |
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8.1 Basic Descriptions of the Hot Stamping Simulation |
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193 | (2) |
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8.2 Several Key Points in Numerical Simulation of Hot Stamping |
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195 | (4) |
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8.2.1 Key technology of Multi-field Coupled Problem |
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195 | (1) |
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8.2.2 Problems of High Temperature Contact Friction |
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196 | (1) |
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8.2.3 The Simulation Technology of Temperature Field |
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197 | (1) |
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8.2.4 The Simulation Technology of Phase Field |
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198 | (1) |
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8.3 The Model Building and Simulation of Temperature Field in Hot Stamping |
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199 | (15) |
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8.3.1 Summary of Temperature Field FEA in Hot Stamping Process |
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199 | (4) |
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8.3.2 Variational Equation of Temperature Field |
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203 | (4) |
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8.3.3 The Basic Equation of Temperature Shell Elements |
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207 | (6) |
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8.3.4 Discreteness of Space Domain and Time Domain in Shell Transient Temperature Field |
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213 | (1) |
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8.4 The Modeling and Simulation of Phase Field in Hot Stamping |
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214 | (4) |
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8.4.1 Summary of Phase Field |
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214 | (1) |
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8.4.2 The Basic Equation of Phase Field |
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215 | (2) |
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8.4.3 The Solving Method of Phase Field |
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217 | (1) |
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8.5 Hot Stamping Multi-Field Coupled Numerical Simulation |
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218 | (22) |
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8.5.1 Static Explicit Algorithm for Hot Stamping Multi-Field Coupled Numerical Simulation |
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218 | (8) |
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8.5.2 Dynamic Explicit Finite Element Formulation of Multi-Filed Coupled Hot Stamping Simulation |
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226 | (14) |
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240 | (3) |
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241 | (2) |
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9 Lightweight of Car Body Structure Applied by Hot Stamping Parts |
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243 | (36) |
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9.1 Lightweight of Car Body Structure Applied by Hot Stamping Parts |
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243 | (21) |
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9.1.1 Hot Stamping Door Anti-crash Beam and Its Process Optimization |
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243 | (4) |
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9.1.2 Application of Hot stamping Parts Based on CAE Crash of Whole Vehicle |
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247 | (4) |
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9.1.3 Application of Hot stamping Parts in Concept Body Lightweight Design |
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251 | (9) |
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9.1.4 The Application of Hot stamping Component in Lightweight Design of Large School Bus |
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260 | (4) |
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9.2 The Application of Gradient Hardness Hot stamping Component in Vehicle Bodywork |
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264 | (11) |
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9.2.1 The Research of Crash Energy Absorption Property of Gradient Hardness Hot stamping Component |
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265 | (4) |
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9.2.2 The Application of Gradient Hardness Hot stamping B-Pillar in Vehicle Bodywork and Optimization Design |
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269 | (6) |
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275 | (4) |
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276 | (3) |
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10 The Optimization Design and Manufacture of Hot Stamping Mold |
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279 | (32) |
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10.1 The Key Technology of Hot Stamping Mold Design |
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279 | (5) |
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10.1.1 The Whole Structure of Mold |
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279 | (1) |
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10.1.2 The Selection of Material |
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280 | (1) |
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10.1.3 Surface Engineering of Mold |
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281 | (2) |
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10.1.4 Optimization Design of Mold Cooling System |
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283 | (1) |
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10.2 The Optimization of Cooling System in Hot Stamping Dies |
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284 | (8) |
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10.2.1 Optimization of Subsystem Decomposition |
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284 | (1) |
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10.2.2 Virtual Prototype of the Optimization of Mold Cooling |
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285 | (3) |
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10.2.3 Optimizing Core Technology Decomposition |
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288 | (1) |
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10.2.4 Optimization Examples |
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289 | (3) |
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10.3 The Manufacturing of Hot Stamping Mold |
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292 | (2) |
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10.3.1 Mold Heat Treatment |
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292 | (1) |
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10.3.2 Mold Surface Strengthening Treatment |
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292 | (2) |
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10.4 The Thermomechanical Fatigue Test and Life Prediction Simulation of Hot Stamping Die |
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294 | (14) |
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10.4.1 Fatigue Type of Hot Stamping Die |
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294 | (1) |
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10.4.2 Thermomechanical Fatigue Test Device |
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295 | (1) |
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10.4.3 Experimental Principle and Content |
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295 | (2) |
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10.4.4 Experimental Results |
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297 | (6) |
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10.4.5 Life Prediction Simulation |
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303 | (5) |
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308 | (3) |
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308 | (3) |
Index |
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311 | |