Reply To: Implement of constraints between two objects in frequency-domain calculations

[Tianyuan Wang]

 

Hi Mike

I add a Connection Stiffness matrix between two objects, but the hydrodynamic coefficients are not changed and strange peaks still exist in the surge, sway, roll and pitch directions. Is there a problem with my operation?

This issue has indeed been bothering me for a long time. Unfortunately, I haven’t found a good solution for it yet. Is there any other solution on it?

Added mass of inner body in the surge direction, no External Lid

Added mass of inner body in the surge direction, Damping Factor of the External Lid is 1, no Connection Stiffness matrix

Added mass of inner body in the surge direction, Damping Factor of the External Lid is 1, Connection Stiffness matrix is diag([9999999,9999999,0,9999999,9999999,9999999])

 

Best regards,

Tianyuan