Reply To: AQWA: Hydrodynamic response error

[Shuangxing Du]

(1) Only 37 6x6 submatrices are added. The matrices due to moorling lines need to be added in the diagonal 6x6 matrices of M3a-3a and M3c-3c respectively.  Please read the finite element method book for the global stiffness assemble from the element stiffness sub-matrices. Each connection and mooring stiffness matrix could be considered as a stiffness matrix of a structural element, and needs to be assembled into the global stiffness matrix, which is the connection stiffness required by the Hydrodynamic Diffraction and Hydrodynamic Response analyses.

(2) If the connection stiffness matrices have been used, there is no need to define any joint/mooring, otherwise they will be duplicated.