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OrcaFlex 说明书.pdf

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w Orcina Ltd. Daltongate Ulverston Cumbria LA12 7AJ UK Telephone: Fax: E-mail: Web Site: OrcaFlex Manual Version 9.7a +44 (0) 1229 584742 +44 (0) 1229 587191 orcina@orcina.com www.orcina.com 1
w CONTENTS 1 INTRODUCTION 1.1 Installing OrcaFlex 1.2 Running OrcaFlex 1.3 Parallel Processing 1.4 Distributed OrcaFlex 1.5 Orcina Licence Monitor 1.6 Demonstration Version 1.7 OrcaFlex Examples 1.8 Validation and QA 1.9 Orcina 1.10 References and Links 2 TUTORIAL Static Analysis 2.1 Getting Started 2.2 Building a Simple System 2.3 Adding a Line 2.4 Adjusting the View 2.5 2.6 Dynamic Analysis 2.7 Multiple Views 2.8 2.9 Getting Output 2.10 Input Data Looking at Results 3 USER INTERFACE 3.1 Program Windows The Model Introduction 3.1.1 3.1.2 3.1.3 Model States 3.1.4 3.1.5 3.1.6 Mouse and Keyboard Actions Toolbar Status Bar 3.2 OrcaFlex Model Files 3.2.1 3.2.2 3.2.3 3.2.4 Data Files Text Data Files Simulation Files Relative Paths 3.3 Model Browser 3.3.1 Model Browser Views 3.3.2 Move Selected Objects Wizard 3 Contents 11 11 13 14 15 15 15 15 15 15 16 21 21 21 21 22 22 23 23 23 24 24 25 25 25 25 25 27 28 28 31 31 32 38 39 39 41 42
Contents 3.4 Libraries 3.4.1 3.4.2 Using Libraries Building a Library 3.5 Menus File Menu Edit Menu Calculation Menu View Menu Replay Menu Graph Menu Results Menu Tools Menu 3.5.1 3.5.2 3.5.3 Model Menu 3.5.4 3.5.5 3.5.6 3.5.7 3.5.8 3.5.9 3.5.10 Workspace Menu 3.5.11 Window Menu 3.5.12 Help Menu 3D Views 3.6.1 3.6.2 3.6.3 3.6.4 3.6.5 3.6.6 3.6.7 3.6.8 3.6.9 3.6.10 Printing, Copying and Exporting Views View Parameters View Control Navigating in 3D Views Shaded Graphics How Objects are Drawn Selecting Objects Creating and Destroying Objects Dragging Objects Connecting Objects 3.6 3.7 Replays 3.7.1 3.7.2 3.7.3 3.7.4 Replay Parameters Replay Control Custom Replays Custom Replay Wizard 3.8 Data Forms 3.8.1 3.8.2 Data Fields Data Form Editing 3.9 Results Producing Results 3.9.1 Selecting Variables 3.9.2 Summary and Full Results 3.9.3 Statistics 3.9.4 Linked Statistics 3.9.5 Offset Tables 3.9.6 Line Clashing Report 3.9.7 Time History and XY Graphs 3.9.8 Range Graphs 3.9.9 3.9.10 Offset Graphs 3.9.11 3.9.12 Extreme Value Statistics Results Spectral Response Graphs 4 w 43 43 46 46 46 48 48 49 50 51 51 51 52 52 53 53 53 54 55 56 57 58 60 60 60 60 60 61 61 62 63 63 64 65 66 67 67 68 69 69 69 70 70 71 72 73 73 73
w 3.9.13 Presenting OrcaFlex Results 3.10 Graphs 3.10.1 Modifying Graphs 3.11 Spreadsheets 3.12 Text Windows 3.13 Workspaces 3.14 Comparing Data 3.15 Preferences 4 AUTOMATION Introduction 4.1 4.2 Batch Processing 4.3 4.4 Examples of setting data Automating Generation Introduction Script Files Script Syntax Script Commands Examples of setting data Handling Script Errors Obtaining Data Names Automating Script Generation 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.2.7 4.2.8 Text Data Files 4.3.1 4.3.2 Post-processing 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.6 4.4.7 4.4.8 4.4.9 4.4.10 Duplicate Instructions Introduction OrcaFlex Spreadsheet Instruction Format Pre-defined commands Basic commands Time History and related commands Range Graph commands Data commands Instructions Wizard 5 THEORY Coordinate Systems 5.1 5.2 Direction Conventions 5.3 Object Connections 5.4 5.5 Interpolation Methods Static Analysis 5.5.1 5.5.2 5.5.3 Line Statics Buoy and Vessel Statics Vessel Multiple Statics 5.6 Dynamic Analysis 5 Contents 76 76 78 78 78 79 79 80 83 83 83 83 84 85 85 88 94 94 94 96 96 103 104 104 105 107 109 109 110 111 111 112 115 119 119 120 121 121 123 123 127 127 127
Contents w Calculation Method 5.6.1 5.6.2 Ramping Friction Theory Spectral Response Analysis Extreme Value Statistics Theory 5.7 5.8 5.9 5.10 Environment Theory 5.10.1 Buoyancy Variation with Depth 5.10.2 Current Theory Seabed Theory 5.10.3 5.10.4 Seabed Non-Linear Soil Model Theory 5.10.5 Morison's Equation 5.10.6 Waves 5.11 Vessel Theory 5.11.1 Vessel Rotations 5.11.2 RAOs and Phases 5.11.3 RAO Quality Checks 5.11.4 Wave Drift and Sum Frequency Loads 5.11.5 5.11.6 5.11.7 5.11.8 Manoeuvring Load 5.11.9 Other Damping 5.11.10 Current and Wind Loads Sea State Disturbance Stiffness, Added Mass and Damping Impulse Response and Convolution 5.12 Line Theory Structural Model Details 5.12.1 Overview 5.12.2 5.12.3 Calculation Stages 5.12.4 Calculation Stage 1 Tension Forces 5.12.5 Calculation Stage 2 Bend Moments 5.12.6 Calculation Stage 3 Shear Forces 5.12.7 Calculation Stage 4 Torsion Moments 5.12.8 Calculation Stage 5 Total Load 5.12.9 Line End Orientation 5.12.10 Line Local Orientation 5.12.11 Treatment of Compression 5.12.12 Contents Flow Effects 5.12.13 Line Pressure Effects 5.12.14 Pipe Stress Calculation 5.12.15 Pipe Stress Matrix 5.12.16 Hydrodynamic and Aerodynamic Loads 5.12.17 Drag Chains 5.12.18 Line End Conditions 5.12.19 Interaction with the Sea Surface 5.12.20 Interaction with Seabed and Shapes 5.12.21 Clashing 5.13 6D Buoy Theory 5.13.1 Overview 5.13.2 Lumped Buoy Added Mass, Damping and Drag 6 128 130 130 134 135 137 137 137 138 139 144 145 152 152 153 155 156 161 162 164 165 166 167 169 169 170 171 172 173 175 175 176 176 177 177 178 179 180 181 182 185 186 186 187 187 190 190 192
w Spar Buoy and Towed Fish Added Mass and Damping Spar Buoy and Towed Fish Drag Slam Force 5.13.3 5.13.4 5.13.5 5.13.6 Contact Forces 5.14 3D Buoy Theory 5.15 Winch Theory 5.16 Shape Theory 6 SYSTEM MODELLING: DATA AND RESULTS 6.1 Modelling Introduction 6.2 Data in Time History Files 6.3 Variable Data 6.3.1 External Functions 6.5 Sea Data Sea Density Data Seabed Data 6.4 General Data Statics Dynamics Integration & Time Steps Explicit Integration Implicit Integration Numerical Damping Response Calculation Results Post Calculation Actions 6.4.1 6.4.2 6.4.3 6.4.4 6.4.5 6.4.6 6.4.7 6.4.8 6.4.9 6.4.10 Drawing 6.4.11 Properties Report Environment 6.5.1 6.5.2 6.5.3 6.5.4 Wave Data Data for Regular Waves 6.5.5 Data for Random Waves 6.5.6 Data for JONSWAP and ISSC Spectra 6.5.7 Data for Ochi-Hubble Spectrum 6.5.8 6.5.9 Data for Torsethaugen Spectrum 6.5.10 Data for Gaussian Swell Spectrum 6.5.11 Data for User Defined Spectrum 6.5.12 Data for Time History Waves 6.5.13 Data for User Specified Components 6.5.14 Data for Response Calculation 6.5.15 Waves Preview 6.5.16 Modelling Design Waves 6.5.17 Setting up a Random Sea 6.5.18 Current Data 6.5.19 Wind Data 6.5.20 Drawing Data 6.5.21 External Functions 7 Contents 193 195 197 199 200 201 202 205 205 206 208 209 210 211 212 213 214 215 216 216 216 217 221 221 222 222 223 223 227 228 228 230 230 231 231 231 232 233 233 233 234 235 238 239 240 241
Contents 6.5.22 Results 6.5.23 Wave Scatter Conversion Solid Friction Coefficients Data 6.6 6.7 Vessels Vessel Modelling Overview Vessel Data Vessel Types Importing Hydrodynamic Data Vessel Response Reports Vessel Results 6.8 6.9 Line Data Line Types Attachments Rayleigh Damping P-y Models Code Checks Line Contact Line Results Drag Chain Results 6.7.1 6.7.2 6.7.3 6.7.4 6.7.5 Modelling Vessel Slow Drift 6.7.6 6.7.7 Lines 6.8.1 6.8.2 6.8.3 6.8.4 6.8.5 6.8.6 6.8.7 6.8.8 6.8.9 6.8.10 Flex Joint Results 6.8.11 Line Setup Wizard 6.8.12 Line Type Wizard 6.8.13 Chain 6.8.14 Rope/Wire 6.8.15 Line with Floats 6.8.16 Homogeneous Pipe 6.8.17 Hoses and Umbilicals 6.8.18 Modelling Stress Joints 6.8.19 Modelling Bend Restrictors 6.8.20 Modelling non-linear homogeneous pipes 6.8.21 Line Ends 6.8.22 Modelling Compression in Flexibles 6D Buoys 6.9.1 Wings 6.9.2 6.9.3 6.9.4 Wing Data 6.9.5 Wing Type Data 6.9.6 6.9.7 6.9.8 6.9.9 6.9.10 6.9.11 6.9.12 6.9.13 Other uses 6.9.14 External Functions Common Data Applied Loads 8 Lumped Buoy Properties Lumped Buoy Drawing Data Spar Buoy and Towed Fish Properties Spar Buoy and Towed Fish Drag & Slam Spar Buoy and Towed Fish Added Mass and Damping Spar Buoy and Towed Fish Drawing Shaded Drawing w 241 242 246 247 248 249 258 283 292 293 296 299 301 316 327 330 333 335 346 354 365 365 365 367 368 372 374 378 380 381 383 386 387 390 391 392 393 395 395 396 397 399 399 401 401 403 403 405 405
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