| Preface |
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xv | |
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1 | (26) |
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1 | (1) |
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1.2 Limits of Traditional Approaches |
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2 | (12) |
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2 | (1) |
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1.2.2 Member Stress State Oversimplification |
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3 | (1) |
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1.2.3 Single Constituent Internal Combined Effects Linearization |
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4 | (3) |
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1.2.4 Single Constituent External Combined-Effects Neglect |
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7 | (1) |
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1.2.5 Neglecting Eccentricities |
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8 | (1) |
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9 | (2) |
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1.2.7 Oversimplification of Plastic Mechanisms Evaluation |
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11 | (2) |
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1.2.8 Evaluation of Buckling Phenomena |
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13 | (1) |
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1.3 Some Limits of the Codes of Practice |
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14 | (7) |
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1.3.1 Problem of Coded Standards |
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14 | (1) |
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1.3.2 T-Stub in Eurocode 3 |
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15 | (2) |
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1.3.3 Eurocode 3 Component Model |
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17 | (3) |
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1.3.4 Distribution of Internal Forces |
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20 | (1) |
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20 | (1) |
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21 | (1) |
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21 | (2) |
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1.5 Automatic Modeling and Analysis of 3D Connections |
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23 | (1) |
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24 | (3) |
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24 | (3) |
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27 | (38) |
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27 | (2) |
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2.2 From the BFEM to the Member Model |
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29 | (11) |
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2.2.1 Physical Model and the Analytical Model |
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29 | (2) |
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2.2.2 Member Detection: Connection Codes |
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31 | (3) |
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2.2.3 An Automatic Algorithm for Straight Prismatic Member Detection |
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34 | (2) |
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2.2.4 Member Data Structure |
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36 | (1) |
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2.2.5 Member Classification at a Node |
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36 | (1) |
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2.2.6 Member Mutual Alignment Coding |
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37 | (3) |
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40 | (2) |
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2.3.1 Need for the Jnode Concept |
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40 | (1) |
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41 | (1) |
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42 | (7) |
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2.4.1 Classification of Jnodes |
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42 | (1) |
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42 | (1) |
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2.4.3 Hierarchical Jnodes |
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42 | (1) |
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43 | (1) |
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43 | (1) |
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44 | (1) |
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45 | (1) |
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2.4.8 Summary of Jnode Classification |
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46 | (1) |
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2.4.9 Setting Connection Codes: Examples |
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46 | (3) |
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2.5 Equal Jnodes Detection |
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49 | (7) |
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49 | (1) |
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2.5.2 Jnode Data Structure |
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49 | (1) |
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2.5.3 Superimposable Member Couples |
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50 | (1) |
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2.5.4 Criteria to Assess Jnodes Equality |
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51 | (1) |
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2.5.5 Algorithm to Find Equal Jnodes |
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52 | (3) |
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55 | (1) |
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2.6 Structural Connectivity Indices |
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56 | (3) |
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59 | (4) |
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59 | (1) |
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2.7.2 Splitting of Jnodes |
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60 | (1) |
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2.7.3 Mutual Interaction of Different Jnodes, Jnode Clusters |
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61 | (2) |
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63 | (1) |
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63 | (2) |
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64 | (1) |
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65 | (8) |
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65 | (1) |
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3.2 Graphs of Connections |
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66 | (3) |
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3.3 Subconstituents vs Layouts |
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69 | (1) |
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3.4 Classification of Connections |
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70 | (3) |
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72 | (1) |
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73 | (32) |
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4.1 From Jnode to Renode Concept |
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73 | (1) |
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4.2 BREP Geometrical Description of 3D Objects |
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73 | (2) |
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75 | (8) |
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75 | (2) |
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77 | (1) |
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78 | (1) |
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79 | (4) |
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83 | (2) |
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4.5 Automatic Connection Detection |
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85 | (6) |
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85 | (1) |
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86 | (3) |
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89 | (2) |
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4.6 Elementary Operations |
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91 | (2) |
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4.7 Renode Logic and the Chains |
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93 | (9) |
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4.7.1 Minimum Compliance Criteria for Renode Good Design |
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93 | (1) |
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94 | (2) |
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96 | (6) |
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102 | (1) |
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103 | (2) |
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5 Pillars of Connection Analysis |
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105 | (50) |
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105 | (6) |
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105 | (3) |
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5.1.2 Statics of Free Rigid Bodies |
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108 | (3) |
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5.2 Action Reaction Principle |
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111 | (4) |
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5.3 Statics of Connections |
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115 | (12) |
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5.3.1 Equilibrium of Members in Renodes: Proper and Dual Models |
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115 | (4) |
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5.3.2 Force Packets for Compound Members |
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119 | (5) |
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5.3.3 Primary Unknowns: Iso-, Hypo-, and Hyperconnectivity |
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124 | (3) |
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5.4 Static Theorem of Limit Analysis |
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127 | (3) |
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5.5 The Unsaid of the Engineering Simplified Methods |
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130 | (1) |
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5.6 Missing Pillars of Connection Analysis |
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130 | (23) |
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131 | (16) |
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147 | (3) |
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150 | (2) |
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152 | (1) |
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5.7 Analysis of Connections: General Path |
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153 | (2) |
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154 | (1) |
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6 Connectors: Weld Layouts |
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155 | (82) |
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155 | (1) |
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6.2 Considerations of Stiffness Matrix of Connectors |
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156 | (4) |
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6.3 Introduction to Weld Layouts |
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160 | (2) |
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6.4 Reference Systems and Stresses for Welds |
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162 | (3) |
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6.5 Geometrical Limitations |
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165 | (2) |
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6.5.1 Penetration Weld Layouts |
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165 | (1) |
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6.5.2 Fillet Weld Layouts |
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166 | (1) |
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6.6 Penetration-Weld Layouts (Groove Welds) |
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167 | (29) |
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167 | (1) |
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6.6.2 Simple Methods to Evaluate the Stresses |
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168 | (2) |
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6.6.3 Weld Layout Cross-Section Data |
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170 | (2) |
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172 | (13) |
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185 | (3) |
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188 | (8) |
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6.7 Fillet-Welds Weld Layouts |
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196 | (18) |
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6.7.1 The Behavior of Fillet Welds |
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196 | (11) |
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6.7.2 Numerical Tests of Fillet Welds in the Linear Range |
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207 | (5) |
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6.7.3 The Stiffness Matrix of a Single Fillet Weld |
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212 | (2) |
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6.7 A Instantaneous Center of Rotation Method in 3D |
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214 | (21) |
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6.7.5 Computing the Stresses in Fillet Welds from the Forces Applied to the Layout |
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231 | (2) |
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6.7.6 Fillet Welds Using Contact and Friction |
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233 | (2) |
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6.8 Mixed Penetration and Fillet Weld Layouts |
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235 | (2) |
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235 | (2) |
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7 Connectors: Bolt Layouts and Contact |
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237 | (82) |
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7.1 Introduction to Bolt Layouts |
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237 | (1) |
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7.2 Bolt Sizes and Classes |
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238 | (2) |
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7.3 Reference System and Stresses for Bolt Layouts |
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240 | (3) |
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7.4 Geometrical Limitations |
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243 | (1) |
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244 | (1) |
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244 | (1) |
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7.5 Not Preloaded Bolt Layouts (Bearing Bolt Layouts) |
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244 | (22) |
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244 | (5) |
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7.5.2 Axial Force and Bending |
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249 | (17) |
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7.6 Preloaded Bolt Layouts (Slip Resistant Bolt Layouts) |
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266 | (11) |
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266 | (8) |
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274 | (1) |
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7.6.3 Axial Force and Bending |
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275 | (2) |
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277 | (5) |
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7.8 Stiffness Matrix of Bolt Layouts and of Single Bolts |
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282 | (14) |
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282 | (1) |
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7.8.2 Not Preloaded Bolts |
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283 | (9) |
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292 | (1) |
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7.8.4 Non-Linear Analysis of Bolts |
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293 | (3) |
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7.9 Internal Force Distribution |
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296 | (20) |
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296 | (6) |
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7.9.2 Bearing Surface Method to Compute Forces in Bolts |
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302 | (4) |
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7.9.3 Instantaneous Center of Rotation Method |
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306 | (1) |
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307 | (9) |
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316 | (3) |
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317 | (2) |
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319 | (66) |
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319 | (1) |
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8.2 Utilization Factor Concept |
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320 | (6) |
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8.3 About the Specifications |
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326 | (2) |
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328 | (9) |
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328 | (1) |
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8.4.2 Penetration Weld Layouts |
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328 | (4) |
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8.4.3 Fillet Weld Layouts |
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332 | (5) |
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337 | (9) |
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8.5.1 Resistance of Bolt Shaft |
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337 | (5) |
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8.5.2 Sliding and Resistance of No-Slip Connections |
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342 | (3) |
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8.5.3 Pull-Out of Anchors, or Failure of the Anchor Block |
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345 | (1) |
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346 | (1) |
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346 | (1) |
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347 | (1) |
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8.7 Members and Force Transferrers |
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347 | (38) |
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347 | (3) |
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8.7.2 Local Failure Modes |
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350 | (8) |
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8.7.3 Fracture Failure Modes |
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358 | (15) |
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8.7.4 Global Failure Modes |
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373 | (9) |
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382 | (3) |
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9 Analysis: Hybrid Approach |
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385 | (66) |
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385 | (1) |
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9.2 Some Basic Reminders About FEM Analysis of Plated-Structures |
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386 | (14) |
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9.2.1 FEM Analysis as an Engineering Tool |
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386 | (1) |
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387 | (1) |
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9.2.3 Linear Buckling Analysis |
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388 | (2) |
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9.2.4 Material Non-Linearity |
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390 | (2) |
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9.2.5 Geometrical Non-Linearity |
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392 | (2) |
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9.2.6 Contact Non-Linearity |
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394 | (2) |
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9.2.7 Non-Linear Analysis Control |
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396 | (4) |
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400 | (18) |
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400 | (1) |
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401 | (1) |
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402 | (6) |
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408 | (3) |
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411 | (2) |
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9.3.6 Remarks on the Use of IRFEM |
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413 | (5) |
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418 | (8) |
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418 | (1) |
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9.4.2 Bolt Resistance Checks |
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419 | (1) |
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419 | (1) |
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419 | (1) |
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419 | (7) |
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9.5 Cleats and Members Non-FEM Checks |
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426 | (4) |
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9.5.1 Action Reaction Principle |
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426 | (2) |
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428 | (1) |
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428 | (1) |
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428 | (1) |
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9.5.5 Simplified Resistance Checks |
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429 | (1) |
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9.6 Single Constituent Finite Element Models |
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430 | (15) |
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9.6.1 Remarks on the Finite Element Models of Single Constituents (SCOFEM) |
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430 | (2) |
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432 | (1) |
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433 | (4) |
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437 | (2) |
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439 | (4) |
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9.6.6 Members: Deciding Member-Stump-Length |
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443 | (1) |
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9.6.7 Compatibility Issues |
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444 | (1) |
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9.7 Multiple Constituents Finite Element Models (MCOFEM) |
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445 | (4) |
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445 | (1) |
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9.7.2 Mesh Compatibility Between Constituents and Connector Elements |
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446 | (1) |
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9.7.3 Saturated Internal Bolt Layouts and Contact Non-Linearity |
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447 | (1) |
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448 | (1) |
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9.7.5 Stabilizing Springs and Buckling of Members |
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448 | (1) |
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449 | (1) |
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9.8 A Path for Hybrid Approach |
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449 | (2) |
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450 | (1) |
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10 Analysis: Pure FEM Approach |
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451 | (34) |
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10.1 Losing the Subconnector Organization |
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451 | (4) |
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10.2 Finite Elements for Welds |
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455 | (8) |
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455 | (2) |
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457 | (3) |
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460 | (3) |
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10.3 Finite Elements for Bolts |
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463 | (15) |
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463 | (1) |
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10.3.2 Bolts in Bearing: No Explicit Bolt-Hole Modeling |
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464 | (1) |
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10.3.3 Bolts in Bearing: Explicit Bolt-Hole Modeling |
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465 | (3) |
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10.3.4 Preloaded Bolts: No Explicit Bolt-Hole Modeling |
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468 | (1) |
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10.3.5 Preloaded Bolts: Explicit Bolt-Hole Modeling |
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468 | (1) |
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10.3.6 Effect of the Bending Moments in Bolt Shafts |
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469 | (1) |
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10.3.7 Example: A Bolted Splice Joint Using PFEM |
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469 | (9) |
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478 | (2) |
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478 | (1) |
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479 | (1) |
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480 | (1) |
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480 | (1) |
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480 | (1) |
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10.6 Checking of Welds and Bolts |
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480 | (1) |
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10.7 Checking of Components |
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481 | (1) |
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10.8 Stiffness Evaluation |
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482 | (2) |
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484 | (1) |
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484 | (1) |
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11 Conclusions and Future Developments |
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485 | (4) |
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485 | (1) |
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11.2 Final Acknowledgments |
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486 | (1) |
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11.2.1 Reasons of This Project |
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486 | (1) |
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487 | (2) |
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488 | (1) |
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Appendix 1 Conventions and Recalls |
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489 | (6) |
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A1.1 Recalls of Matrix Algebra, Notation |
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489 | (1) |
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490 | (2) |
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492 | (1) |
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A1.4 Change of Reference System |
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493 | (1) |
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A1.5 Pseudocode Symbol Meaning |
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493 | (2) |
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Appendix 2 Tangent Stiffness Matrix of Fillet-Welds |
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495 | (8) |
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A2.1 Tangent Stiffness Matrix of a Weld Segment |
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495 | (4) |
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A2.2 Modifications for Weld Segments Using Contact |
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499 | (1) |
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A2.3 Tangent Stiffness Matrix of a Weld Layout for the Instantaneous Center of Rotation Method |
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500 | (3) |
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Appendix 3 Tangent Stiffness Matrix of Bolts in Shear |
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503 | (4) |
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A3.1 Tangent Stiffness Matrix of a Bolt |
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503 | (2) |
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A3.2 Tangent Stiffness Matrix of a Bolt Layout for the Instantaneous Center of Rotation Method |
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505 | (2) |
| Symbols and Abbreviations |
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507 | (6) |
| Index |
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513 | |