Calculate the rotation Angle at the mud line.

Wind & Water Structural Analysis
2

Dear @Long.Li,

In the SubDyn model of the OC3-monopile, MemberID 1 connects JointID 1 and 2 and JointID 1 is the first node of this member. So, to output the translation and rotation of this node, you should add member 1, node 1 to the member output list and then select the nodal displacements and rotations in the SSOutList. Members 2 and 3 were previously listed in this member output list; you can see below where I increased NMOutputs from 2 to 3 and added member 1, node 1 to the table in the 3rd row:

             3   NMOutputs   - Number of members whose forces/displacements/velocities/accelerations will be output (-) [Must be <= 99].
MemberID   NOutCnt    NodeCnt ![NOutCnt=how many nodes to get output for [< 10]; NodeCnt are local ordinal numbers from the start of the member, and must be >=1 and <= NDiv+1] If NMOutputs=0 leave blank as well.
  (-)        (-)        (-)
   2          1          1
   3          1          1
   1          1          1

In this case, the displacement and rotations of member 1, node 1 can be output via the SSOutList through outputs:

"M3N1TDxss, M3N1TDyss, M3N1TDzss, M3N1RDxe, M3N1RDye, M3N1RDze"

Best regards,

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