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*BCREFPF
Data format:
One line with 13 parameters as follows:
IREF NOE ENCAS PSI \(u_1(1) u_1(2) u_1(3) u_2(1) u_2(2) u_2(3) u_3(1) u_3(2) u_3(3)\)
Status:
Optional
Purpose:
To define a reference frame \((\vec{u}_1, \vec{u}_2, \vec{u}_3)\) connected to a Floating production facility (FPF).
Restriction:
NOE must belong to a FPF
Details :
Parameter | Description |
---|---|
IREF | Identification number of the reference. IREF may be defined by introducing \(\vec{u}_3\) orientation through the ENCAS and PSI parameters. If ENCAS and PSI are null, IREF may be defined by at least one of the three vectors : \(\vec{u}_1, \vec{u}_2\) or \(\vec{u}_3\) |
ENCAS | Angle in degrees of \(\vec{u}_3/Oz\) (rotation around -y) in the corresponding FPF local reference (G,x,y,z) |
PSI | Aangle in degrees of \(\vec{u}_3/Ox\) (rotation around z) in the corresponding FPF local reference (G,x,y,z) |
u1(1) | X-coordinate of the local 1 axis \(\vec{u}_1\) expressed in the corresponding FPF local reference (G,x,y,z) |
u1(2) | Y-coordinate of the local 1 axis \(\vec{u}_1\) expressed in the corresponding FPF local reference (G,x,y,z) |
u1(3) | Z-coordinate of the local 1 axis \(\vec{u}_1\) expressed in the corresponding FPF local reference (G,x,y,z) |
u2(1) | X-coordinate of the local 2 axis \(\vec{u}_2\) expressed in the corresponding FPF local reference (G,x,y,z) |
u2(2) | Y-coordinate of the local 2 axis \(\vec{u}_2\) expressed in the corresponding FPF local reference (G,x,y,z) |
u2(3) | Z-coordinate of the local axis \(\vec{u}_2\) expressed in the corresponding FPF local reference (G,x,y,z) |
u3(1) | X-coordinate of the local 3 axis \(\vec{u}_3\) expressed in the corresponding FPF local reference (G,x,y,z) |
u3(2) | Y-coordinate of the local 3 axis \(\vec{u}_3\) expressed in the corresponding FPF local reference (G,x,y,z) |
u3(3) | Z-coordinate of the local 3 axis \(\vec{u}_3\) expressed in the corresponding FPF local reference (G,x,y,z) |
Note
IREF must not be used for any other reference frame defined with BCREFGLO, BCREFLOC or *BCREFPF Let n be the built-in vector :
$$ \vec{n} = \begin{pmatrix} -\sin(ENCASD)\cos(PSID) \ -\sin(ENCASD)\sin(PSID) \ \cos(ENCASD) \end{pmatrix} $$