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RIFLEX

    • User Guide
      • RIFLEX modeling from scratch in SIMA
      • Importing OrcaFlex models
      • RIFLEX Task
      • RIFLEX Location
      • Slender system
        • Supernodes, lines, line types, etc
          • Reference Frame
          • Supernode
          • Line
            • Line Type
            • Stress Joint Line Type
            • Local Element Axis
          • Slender System Connection
          • Support Vessel
          • Main Riser Line
          • Winch
        • Cross Sections
          • Axisymmetric cross section
            • Examples of hysteresis modeling
          • Axisymmetric cross section with coupled axial/torsional strain
          • Thin-walled Pipe Cross Section
          • Double Symmetric Cross Section
          • General Cross Section
          • Armoured cross section
          • Chain Cross Section
          • Fibre Rope Cross Section
            • Fibre Rope Model
          • Fibre Rope Wizard
          • Rope/Wire Wizard
          • Fish Net
        • Components
          • Marine growth profile
          • Nodal Body
          • Ball Joint Connector
          • Flex Joint Connector
          • Internal Fluid
          • Global Spring
          • Pipe-in-Pipe
            • Pipe-in-Pipe Contact Input
            • Modelling Recommendations
          • Elastic Contact Surface
            • Roller Contact
              • Roller
            • Tensioner
            • Tubular Contact
          • Regular 3D bottom
          • Drag Chain
          • External Wrapping
        • Seafloor and soil contact
          • Model sea floor and soil contact for slender system lines
          • Seafloor Contact
            • Riser Soil Contact
            • Seafloor Spring Contact
            • Seafloor Contact Stiffness and Friction
          • Soil contact
            • Pisa Soil Model
              • Parameterized Pisa Curves
              • Pisa Soil Layer Profile
              • Pisa Sand
              • Pisa Clay
              • Dunkirk Sand
            • Geotechnical Soil Model
              • Geotechnical model
              • Clay Material
              • Sand Material
              • Geotechnical Line Specification
            • Geotechnical spring
        • Wind Turbine
          • Generic Internal Controller
          • External Java Controller
          • External Bladed Style Controller
          • Internal Yaw Controller
          • HAWC2 Import
        • User Defined Element
          • Interface Userderdef_element_init()
          • Interface Userderdef_element_calculate()
          • Interface Userderdef_element_finish()
        • Load Model
          • Hydrodynamic Load Models
            • Morison’s Generalized Equation
            • MacCamy-Fuchs Load Model
            • Partly Submerged Elements
            • Potential Flow
            • Net
            • Time Domain VIV
            • Froude-Krylov Scaling
          • Aerodynamic Load Models
            • Drag
            • Airfoil
            • Time Domain VIV
      • Analysis
        • Static Calculation Parameters
          • Options
          • Static loads
            • Loading Sequence
            • Load Sequency for Typical Configurations
            • Convergence Criteria
            • Load Components
            • Parameter Variation
          • Storage
            • Mass Summary
            • Body Results
          • Achieving Model Stability
        • Dynamic Calculation Parameters
          • Irregular Analysis
          • Regular Analysis
          • Simulation Procedure
          • Dynamic Loads
          • Dynamic Storage
          • Body Parameters
        • Eigenvalue Calculation Parameters
        • Frequency Domain VIV Calculation Parameters
          • VIVANA
          • Analysis Parameters
          • Eigenvalue Parameters
          • Hydrodynamic Properties
          • Fatigue Analysis
        • Capacity checks
          • DNV OS F201 Combined Loading
          • DNV OS E301 Mooring Capacity
          • ISO 13628-7 Combined Loading Analysis
          • Tension and Curvature Capacity Check
          • von Mises Combined Loading
        • Fatigue Analyses
        • Additional Input Files
          • Current profile from file
          • Internal flow description
          • Dynamic current variation
          • Nodal forces from file
          • Support vessel transfer function
          • Diffracted wave transfer functions at points
          • Wave frequency motion time series
          • Low frequency motion time series
          • Wave time series
      • Matrix Plot Result
    • Theory
      • Introduction
      • Finite Element Formulation
      • Static Catenary Analysis
      • Static Finite Element Analysis
      • Dynamic Time Domain Analysis
      • Eigenvalue Analysis
      • Load Models
        • Overview of Load Effects
        • Hydrostatic Pressure Effects
        • Wave Potential
        • Current Description
        • Hydrodynamic Load Models for Submerged Elements
        • Hydrodynamic Load on Partly Submerged, Floating Elements
        • Forced Vessel Motion
        • Effects from Internal Fluid Flow (Slug Flow)
        • Aerodynamic Loads
        • References
      • Motion Transfer Functions
      • Contact Formulation
      • Result Post-Processing
    • Input Reference
      • Introduction
      • System Specification
      • Main Types of Analysis
      • How to Run the Program
      • Input to INPMOD
        • General Control Data
        • Slender system
          • Riser type specification
          • Standard system SA
          • Standard system SB
          • Standard system SC
          • Standard system SD
          • Standard system AR
            • Control data
            • Seafloor contact
            • System topology
            • Element coordinate system
            • Boundary conditions
            • Support vessel
            • Global springs
            • Kill and choke lines
            • Rigid supernode connection
          • Line and segment
          • Seafloor contact specification
          • Wind turbine
            • Wind turbine specification
            • Additional Input Files
              • Airfoil library file
              • Wind turbine internal blade and power control input file
              • Wind turbine external blade and power control input file
              • Wind turbine internal yaw control input file
          • Local element axis
          • Main riser line
          • Elastic contact surface
          • Pipe-in-pipe contact
          • Geotechnical spring
          • Soil layer profile
          • Stress joint
          • Airfoil coefficient library
          • Winch
          • Userdefined element
          • Potential flow library
          • Shared nodes (under development)
        • Cross sections
          • Thin walled pipe cross section
          • Axisymmetric cross section
          • Coupled axial torsion cross section
          • Fibre rope cross section
          • Doublesymmetric cross section
          • Partly submerged cross section
          • General cross section
        • Components
          • Body
          • Ball joint
          • Flex joint
          • Internal fluid
          • Seafloor contact
          • Roller contact
          • Tubular contact
          • Tensioner
          • Soil (PISA)
          • Drag chain
          • Marine growth
          • External wrapping
        • Environmental Data
        • Support Vessel Data
        • Floater Force Model Data
      • Input to STAMOD
      • Input to DYNMOD
      • Input to OUTMOD
        • Distance time series
        • Element angle time series
        • Stress time series
        • Stress envelope curves
        • Time domain S-N fatigue damage
        • Time domain T-N fatigue damage
        • STAMOD results (deprecated)
        • DYNMOD results (deprecated)
        • STARTIMES file description
      • Appendix A: Hydrodynamic load models
      • Appendix B: Modelling
      • Appendix C: Analysis settings
      • Appendix D: Extract results
      • Appendix E: System settings and licenses
      • Appendix F: Mass and inertia summary
      • Appendix G: Sign convention for internal loads
      • RIFLEX Release Notes
RIFLEX
  • Bibliography
  • Metocean
  • Optimization
  • Post Processor
  • Release Notes
  • Report Generator
  • RIFLEX
  • SIMA Documentation
  • SIMA How-tos
  • SIMA How-tos
  • SIMO
  • User guide
  • VIVANA
  • WAMIT
  • Wind Field
  • Workflow
  • RIFLEX
  • Theory
  • Load Models

Load Models

The following sections describe the load models implemented in RIFLEX.

  • Overview of Load Effects

  • Hydrostatic Pressure Effects

  • Wave Potential

  • Current Description

  • Hydrodynamic Load Models for Submerged Elements

  • Hydrodynamic Load on Partly Submerged, Floating Elements

  • Forced Vessel Motion

  • Effects from Internal Fluid Flow (Slug Flow)

  • Aerodynamic Loads

  • References

Eigenvalue Analysis Overview of Load Effects

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