Marine systems simulation
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Cable.h
1
96#ifndef CABLE_H
97#define CABLE_H
98#include "SimObject.h"
99namespace environment {
100class EnvironmentProvider;
101}
102class C3DLine;
103
104class CCable : public SimObject
105{
106 public:
118 CCable(const string& simObjectName, ISimObjectCreator* const creator);
119
120 ~CCable();
121
134 void OdeFcn(const double T, const double* const X, double* const XDot, const bool bIsMajorTimeStep);
135
136
152 void InitialConditionSetup(const double T, const double* const currentIC, double* const updatedIC, ISimObjectCreator* const creator);
153
154 void FinalSetup(const double T, const double* const X, ISimObjectCreator* const creator);
155
156 const double* ForceA(const double T, const double* const X);
157 const double* ForceB(const double T, const double* const X);
158
159 void computeEndForces(const double T, const double* const X);
160
161#ifdef FH_VISUALIZATION
162 void RenderInit(Ogre::Root* const ogreRoot, ISimObjectCreator* const creator);
163 void RenderUpdate(const double T, const double* const X);
164#endif
165
166 protected:
183 void computeSegmentForces(const double T, const double* X, const double* pA, const double* pB, const double* vA, const double* vB, double* FA, double* FB);
184
185
201 void computeVirtualPoint(const double* const target, const double* const point, const double* const targetVel, const double* const pointVel, double* virtualPoint, double* virtualPointVel, double residual, double dResidual);
202
203 void testPositiveParam(double value, ISimObjectCreator* creator, string valueName);
204 void computeElementTension(const double* prev, const double* curr, double* force);
205
208 double m_Emodulus;
211 double m_diameter;
217
225
226 ISignalPort* m_PositionA;
227 ISignalPort* m_PositionB;
228 ISignalPort* m_VelocityA;
229 ISignalPort* m_VelocityB;
234
235 double m_endForceA[3];
236 double m_endForceB[3];
237 double m_nodeForceA[3];
238 double m_nodeForceB[3];
243 double m_virtualPointA[3];
244 double m_virtualPointB[3];
247 double m_residualA;
248 double m_residualB;
249 ICommonComputation* m_computeEndForces;
250
251 const double* m_posA;
252 const double* m_posB;
253 const double* m_velA;
254 const double* m_velB;
255
256 environment::EnvironmentProvider* m_environment;
257
258#ifdef FH_VISUALIZATION
259 C3DLine* m_lines1;
260 C3DLine* m_lines2;
261#endif
262};
263#endif
Definition Cable.h:105
ISignalPort * m_VelocityB
input port. Velocity of point A [m/s]
Definition Cable.h:229
const double * ForceB(const double T, const double *const X)
output port. See PortDefs.h. Returns force at point A
double m_hydrodynamicDiameter
cable diameter [m]
Definition Cable.h:212
double m_endForceB[3]
reactive force at endpoint A [N]
Definition Cable.h:236
void computeVirtualPoint(const double *const target, const double *const point, const double *const targetVel, const double *const pointVel, double *virtualPoint, double *virtualPointVel, double residual, double dResidual)
Computes position and velocity of the virtual point.
environment::EnvironmentProvider * m_environment
Velocity of point B [m].
Definition Cable.h:256
double m_submergedWeight
effective hydrodynamic diameter [m]
Definition Cable.h:213
const double * ForceA(const double T, const double *const X)
retrieves pointer to environment object
void computeEndForces(const double T, const double *const X)
output port. See PortDefs.h. Returns force at point B
double m_segmentStiffness
length of spring between elements [m]
Definition Cable.h:222
const double * m_posA
computation node for endpoint reaction forces
Definition Cable.h:251
ISignalPort * m_retractedSpeedPortB
retraction rate at endpoint A [m/s]
Definition Cable.h:233
double m_segmentMass
inverse mass of each element [kg^-1]
Definition Cable.h:219
double m_elementMass
number of elements in the cable [#]
Definition Cable.h:216
ISignalPort * m_PositionB
input port. Position of point A [m]
Definition Cable.h:227
double m_retractedLengthA
force on first free node at endpoint A [N]
Definition Cable.h:239
double m_virtualPointVelocityB[3]
when cable is winched, the closest free node is attracted towards a ghost point "beyond" the actual e...
Definition Cable.h:246
double m_Emodulus
cable weight [kg/m]
Definition Cable.h:208
void InitialConditionSetup(const double T, const double *const currentIC, double *const updatedIC, ISimObjectCreator *const creator)
Sets initial conditions based on the value of input ports.
double m_virtualPointVelocityA[3]
when cable is winched, the closest free node is attracted towards a ghost point "beyond" the actual e...
Definition Cable.h:245
double m_cableLength
compute structural tension for a single element
Definition Cable.h:206
CCable(const string &simObjectName, ISimObjectCreator *const creator)
Reads parameters, registers states, input/output ports and shared resources.
double m_virtualPointA[3]
number of nodes currently on winch B
Definition Cable.h:243
double m_virtualPointB[3]
when cable is winched, the closest free node is attracted towards a ghost point "beyond" the actual e...
Definition Cable.h:244
double m_diameter
displaced fluid volume per meter cable [m^2]
Definition Cable.h:211
double m_displacementCrossSectionArea
cross section area of load bearing material [m^2]
Definition Cable.h:210
double m_endForceA[3]
retraction rate at endpoint B [m/s]
Definition Cable.h:235
int m_retractedNodesA
amount of retracted cable at endpoint B [m]
Definition Cable.h:241
int * m_elementVelocityIndex
The relative index of the position state in the state array for each element [#].
Definition Cable.h:224
const double * m_velA
Position of point B [m].
Definition Cable.h:253
double m_tensileCrossSectionArea
Young's modulus of load bearing material [Pa].
Definition Cable.h:209
int m_retractedNodesB
number of nodes currently on winch A
Definition Cable.h:242
void computeSegmentForces(const double T, const double *X, const double *pA, const double *pB, const double *vA, const double *vB, double *FA, double *FB)
computes free nodes and both end forces
void computeElementTension(const double *prev, const double *curr, double *force)
test if a parameter is positive, and reports error if not.
double m_residualB
free length of closest free node [m]
Definition Cable.h:248
double m_elementMassInverse
mass of each element [kg]
Definition Cable.h:218
double m_residualA
when cable is winched, the closest free node is attracted towards a ghost point "beyond" the actual e...
Definition Cable.h:247
ISignalPort * m_retractedLengthPortA
input port. Velocity of point B [m/s]
Definition Cable.h:230
double m_cableWeight
total cable length [m]
Definition Cable.h:207
ISignalPort * m_retractedSpeedPortA
amount of retracted cable at endpoint B [m]
Definition Cable.h:232
ISignalPort * m_VelocityA
input port. Position of point B [m]
Definition Cable.h:228
void OdeFcn(const double T, const double *const X, double *const XDot, const bool bIsMajorTimeStep)
free allocated memory
int * m_elementPositionIndex
spring stiffness [N/m]
Definition Cable.h:223
int m_numElements
structural axial damping. [N*s/m]
Definition Cable.h:215
double m_internalDamping
weight of cable underwater [kg/m]
Definition Cable.h:214
double m_nodeForceB[3]
force on first free node at endpoint A [N]
Definition Cable.h:238
ISignalPort * m_PositionA
The relative index of the velocity state in the state array for each element [#].
Definition Cable.h:226
double m_retractedLengthB
amount of retracted cable at endpoint A [m]
Definition Cable.h:240
const double * m_velB
Velocity of point A [m].
Definition Cable.h:254
ISignalPort * m_retractedLengthPortB
amount of retracted cable at endpoint A [m]
Definition Cable.h:231
double m_segmentSubmergedMass
mass of each segment [kg]
Definition Cable.h:220
const double * m_posB
Position of point A [m].
Definition Cable.h:252
double m_segmentLength
submerged weight of each element [kg]
Definition Cable.h:221
ICommonComputation * m_computeEndForces
free length of closest free node [m]
Definition Cable.h:249
double m_nodeForceA[3]
reactive force at endpoint A [N]
Definition Cable.h:237