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Ansys Learning Forum › Forums › Installation and Licensing › Ansys Products › AQWA: Hydrodynamic response error › Reply To: AQWA: Hydrodynamic response error

October 30, 2024 at 7:14 pm
S.S.S.ShankaVasuki
Subscriber

So if I understand correctly, I need to have a total 37 connection stiffness matrices for the joints and two fixed "equilibrium" connection stiffness matrices for the mooring lines right? I have made an image which shows all the connection matrices I need to define in my simulation as highlighted in yellow. Could you please let me know if this is correct?

Also I have some questions on your next comment:

  1. You mentioned - "Note that the diagonal 6x6 submatrices may be the assembles of sub-matrices from all the linkages" ... I could not quite understand this. Because the reference article I am referring to gives the matrices as shown in the figure below. So should I give all the 37 connection stiffness matrix (excluding the mooring lines) as a diagonal matrix with C11,C22,...C66?

2. If I use the beta options and include the connection stiffness matrices for the hydrodynamic response analysis, do I still need to define joints such as hinge joints or ball or socket? And do I have enable a linear cable connection for the mooring lines? 

Please help me out with this as I have been trying a lot of things which have not been working.