RAOs can be calculated for any results variable using the Spectral Response Analysis feature. In addition to the time domain features, modal analysis can be performed for either the whole system or for Terms and constraints on the system in response to new engineering requirements. Mathematical formulation and allows quick and efficient development of the program to include additional force A lumped mass element is used which greatly simplifies the OrcaFlex is a fully 3D non-linear time domain finite element program capable of dealing with arbitrarily largeĭeflections of the flexible from the initial configuration. The program can be operated in batch mode for routine analysis work and there are also specialįacilities for post-processing your results including fully integrated fatigue analysis capabilities. OrcaFlex makes extensive use of graphics to assist Wave and current loads and externally imposed motions. OrcaFlex provides fast and accurate analysis of catenary systems such as flexible risers and umbilical cables under Moorings, installation and towed systems. Welcome to OrcaFlex (version 9.8a), a marine dynamics program developed by Orcina for static and dynamicĪnalysis of a wide range of offshore systems, including all types of marine risers (rigid and flexible), global analysis,
#Orcaflex tutorial code
Contents w 3.4 Libraries 43 3.4.1 Using Libraries 43 3.4.2 Building a Library 46 3.5 Menus 46 3.5.1 File Menu 46 3.5.2 Edit Menu 48 3.5.3 Model Menu 48 3.5.4 Calculation Menu 49 3.5.5 View Menu 50 3.5.6 Replay Menu 51 3.5.7 Graph Menu 51 3.5.8 Results Menu 51 3.5.9 Tools Menu 52 3.5.10 Workspace Menu 52 3.5.11 Window Menu 53 3.5.12 Help Menu 53 3.6 3D Views 53 3.6.1 View Parameters 54 3.6.2 View Control 56 3.6.3 Navigating in 3D Views 56 3.6.4 Shaded Graphics 57ģ.6.10 Printing, Copying and Exporting Views 61ģ.10 Graphs 76 3.10.1 Modifying Graphs 78 3.11 Spreadsheets 78 3.12 Text Windows 78 3.13 Workspaces 79 3.14 Comparing Data 79 3.15 Preferences 80 4 AUTOMATION 83 4.1 Introduction 83 4.2 Batch Processing 83 4.2.1 Introduction 83 4.2.2 Script Files 84 4.2.3 Script Syntax 85 4.2.4 Script Commands 85Ĥ.3.2 Automating Generation 103 4.4 Post-processing 105 4.4.1 Introduction 105 4.4.2 OrcaFlex Spreadsheet 105 4.4.3 Instruction Format 108 4.4.4 Pre-defined commands 110 4.4.5 Basic commands 110Ĥ.4.6 Time History and related commands 111Ĥ.4.8 Data commands 112 4.4.9 Instructions Wizard 113 4.4.10 Duplicate Instructions 116 5 THEORY 119 5.1 Coordinate Systems 119 5.2 Direction Conventions 120 5.3 Object Connections 121 5.4 Interpolation Methods 121 5.5 Static Analysis 123 5.5.1 Line Statics 123ĥ.10.4 Seabed Non-Linear Soil Model Theory 138ĥ.11.4 Wave Drift and Sum Frequency Loads 155ĥ.11.6 Stiffness, Added Mass and Damping 161ĥ.11.7 Impulse Response and Convolution 164ĥ.12.4 Calculation Stage 1 Tension Forces 171ĥ.12.5 Calculation Stage 2 Bend Moments 172ĥ.12.6 Calculation Stage 3 Shear Forces 175ĥ.12.7 Calculation Stage 4 Torsion Moments 175ĥ.12.8 Calculation Stage 5 Total Load 176ĥ.12.16 Hydrodynamic and Aerodynamic Loads 182ĥ.12.19 Interaction with the Sea Surface 186ĥ.12.20 Interaction with Seabed and Shapes 187ĥ.13.3 Spar Buoy and Towed Fish Added Mass and Damping 192Ħ.5.7 Data for JONSWAP and ISSC Spectra 231Ħ.5.10 Data for Gaussian Swell Spectrum 233Ħ.5.11 Data for User Defined Spectrum 233Ħ.5.13 Data for User Specified Components 235Ħ.7.8 Vessel Results 308 6.8 Lines 312 6.8.1 Line Data 314 6.8.2 Line Types 329 6.8.3 Attachments 340 6.8.4 Rayleigh Damping 343 6.8.5 P-y Models 346 6.8.6 Code Checks 348 6.8.7 Line Contact 359 6.8.8 Line Results 369Ħ.8.20 Modelling non-linear homogeneous pipes 400Ħ.8.22 Modelling Compression in Flexibles 404Ħ.9.8 Spar Buoy and Towed Fish Properties 414Ħ.9.9 Spar Buoy and Towed Fish Drag & Slam 416Ħ.9.10 Spar Buoy and Towed Fish Added Mass and Damping 417Ħ.9.11 Spar Buoy and Towed Fish Drawing 418 (9)Ħ.9.13 Other uses 421 6.9.14 External Functions 421 6.9.15 Properties Report 421 6.9.16 Results 422 6.9.17 Buoy Hydrodynamics 425Ħ.9.18 Hydrodynamic Properties of a Rectangular Box 426Ħ.9.19 Modelling a Surface-Piercing Buoy 428Ħ.10 3D Buoys 431 6.10.1 Data 431 6.10.2 Properties Report 432 6.10.3 Results 432 6.11 Winches 433 6.11.1 Data 434 6.11.2 Wire Properties 435 6.11.3 Control 435 6.11.4 Control by Stage 435Ħ.11.6 Drive Unit 436 6.11.7 External Functions 437 6.11.8 Results 437 6.12 Links 438 6.12.1 Data 438 6.12.2 Results 439 6.13 Shapes 440 6.13.1 Data 441 6.13.2 Blocks 442 6.13.3 Cylinders 442 6.13.4 Curved Plates 443 6.13.5 Planes 444 6.13.6 Drawing 444 6.13.7 Results 445Ĩ.4 Load Cases Data for Regular Analysis 458Ĩ.5 Load Cases Data for Rainflow Analysis 458Ĩ.6 Load Cases Data for Spectral Analysis 459 (10)
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