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$MODEL |
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This section includes data such as the finite element discretisation, structural and hydrodynamic properties, plus any other inputs which characterise the initial model configuration (e.g. initial vessel position, seabed properties, ocean depth etc.) – basically any information which cannot logically change from run to run.
This section contains the following keywords:
•*ADDED MASS is used to define added mass for a floating body.
•*AUXILIARY is used to specify the auxiliary elements which comprise an auxiliary body.
•*BENDING HYSTERESIS is used to define hysteresis moment-curvature backbone curves for non-linear materials.
•*BLADE GEOMETRY is used to specify the geometry of wind turbine blades.
•*BLADE STRUCTURE is used to specify the structural properties of wind turbine blades.
•*BODY,INTEGRATED is used to add subsea components to the structural animation for enhanced visual appeal.
•*CABLE is used to specify that part of the structure forms a cable between specified end points.
•*CABLE BUNDLE is used to specify that two (or more) cables are to be "bundled" together.
•*CALM MODEL is used to specify the properties of calm buoys.
•*CLASHING is used to specify regions where clashing may occur, and suitable contact stiffness and damping values.
•*COATINGS is used to apply coatings on the basis of element set.
•*COLOUR DEFINE is used to define a specific colour using RGB colour coding.
•*DAMPER is used to define damper elements in the structural discretisation.
•*DAMPER DATA is used to define time-varying coefficients for use with damper elements.
•*DRAG CHAIN is used to include drag chains in the structural model.
•*DRAG LIFT is used to define non-linear drag lift relationships.
•*ELASTIC SURFACE is used to specify the properties of an elastic seabed.
•*ELEMENT is used to specify the finite element connectivity of the structural model.
•*ELEMENT,AUXILIARY is used to specify the connectivity of auxiliary elements in the model.
•*ELEMENT SETS is used to group individual elements into element sets.
•*EMBEDMENT is used to define force-embedment curves for an elastic seabed.
•*EQUIVALENT is used to specify that two individual nodes are a single equivalent node.
•*FLEX JOINT is used to define flex joint elements in the structural discretisation.
•*FLOATING BODY is used to define a floating body and its associated properties.
•*FORCE-STRAIN is used to define force-strain curves for non-linear materials.
•*GEOMETRIC SETS is used to assign geometric properties to element sets.
•*GUIDE is used to define guide (contact) surfaces.
•*HINGE is used to specify hinge elements in the structural discretisation.
•*HYDRODYNAMIC COUPLING is used to define hydrodynamic coupling between adjacent floating bodies.
•*HYDRODYNAMIC SETS is used to assign hydrodynamic coefficients to element sets.
•*LABEL is used to associate a descriptive name with a node or element of the finite element model.
•*LINE LOCATIONS is used to define named locations along a line, allowing you to request that nodes be positioned exactly at specific lengths along a line.
•*LINE SECTION GROUPS is used to define groups of line sections which may be reused and repeated along line sections.
•*LINES is used to define a straight line or a catenary section. Several connecting catenaries, created by weight and buoyancy distributions (e.g. such as a lazy-wave catenary), may also be modelled using *LINES.
•*LINE PATHS is used to define a line with an arbitrary geometrical configuration (e.g. such as a rigid spool).
•*LINE PATH SECTIONS is used to define sections within a line path with a view to generating additional element sets. This keyword is closely linked to *LINE PATHS.
•*LINES PIP is used to specify that two lines are connected in a pipe-in-pipe (or pipe-on-pipe) configuration.
•*LOCAL AXIS SYSTEM is used to define local axis systems.
•*MASS is used to specify a point mass or a point rotary inertia.
•*MOMENT CURVATURE is used to define moment-curvature curves for non-linear materials.
•*MOONPOOL is used to define the location and extent of the vessel moonpool at solution initiation, for the purpose of applying hydrodynamic loading on elements of the structure contained within the vessel moonpool.
•*MOORED VESSEL is used to define a moored vessel and its associated properties.
•*NODE is used to define nodal coordinates in the global Cartesian coordinate system.
•*NODE,AUXILIARY is used to define auxiliary nodal coordinates in the global Cartesian coordinate system.
•*NODE,CURVILINEAR is used to specify nodes at particular locations along a cable, or to specify a number of equally spaced nodes along a cable segment between two nodes.
•*NODE SPRING is used to specify the stiffness and direction of node springs.
•*NONLINEAR STIFFENER is used to define a stress-strain curve for a non-linear bend stiffener.
•*NO OPTIMISE is used to specify whether or not bandwidth optimisation is to be performed.
•*OCEAN is used to specify general parameters defining the ocean environment.
•*PANEL,AUXILIARY is used to specify nodes which are connected by an auxiliary panel.
•*PANEL SECTIONS,AUXILIARY is used to specify the auxiliary panels that make up an auxiliary body.
•*PIP CONNECTION is used to define pipe-in-pipe connections between nodes of the finite element model.
•*PIP SECTION is used to define internal and external pipe sections when part of a pipe model is contained within another.
•*PIP STIFFNESS is used to define force-deflection curves for non-linear pipe-in-pipe connection stiffnesses.
•*PLASTIC HARDENING is used to define hardening models for plastic materials.
•*POINT BUOY is used to define point buoys and their associated hydrodynamic properties.
•*POISSON is used to include Poisson's ratio effects in an analysis.
•*PROPERTIES is used to assign effective structural properties to element sets for use in calculating stresses.
•*P-Y is used to define P-y curves for modelling soil structure interaction.
•*RADIATION DAMPING is used to define radiation damping for a floating body.
•*RAO FORMAT is used to define custom RAO conversion settings.
•*RIGID SURFACE is used to specify the properties of a rigid seabed.
•*SEABED PROFILE is used to specify the seabed profile/bathymetry.
•*SEABED PROPERTIES is used to specify properties such as seabed type (i.e. rigid or elastic) and friction parameters.
•*SEABED STIFFNESS is used to define nonlinear seabed contact stiffness.
•*SET COLOURS is used to assign a specific colour to an element set or sets.
•*SPRING ELEMENT is used to define the stiffness characteristics of spring elements.
•*STIFFENER is used to define the properties of a conical bend stiffener positioned on a flexible riser or pipe.
•*STRESS/STRAIN is used to define generalised stress-strain curves for non-linear materials.
•*STRESS/STRAIN DIRECT is used to define direct stress-strain curves for non-linear materials.
•*TAPER is used to assign properties to a set of elements that collectively comprises a tapered stress joint, typically in a model of a rigid riser.
•*TORQUE-TWIST is used to define torque-twist curves for non-linear materials.
•*TURBINE GEOMETRY is to specify information relating to a wind turbine, including the hub, shaft, bearings and nacelle.
•*TURBINE ROTOR is used to assemble a wind turbine rotor by selecting blades and specifying related information.
•*T-Z is used to define T-z curves for modelling soil structure interaction.
•*VECTOR is used to define vectors for use with the solution criteria feature.
•*VESSEL is used to specify the initial position and undisplaced orientation of a vessel.
•*VESSEL,INTEGRATED is used to specify all information pertaining to a vessel or vessels.
•*VISCOUS DRAG is used to define viscous drag for a floating body.
•*WAMIT is used to specify that Flexcom is to read floating body data from WAMIT output.