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General Mechanical

General Mechanical

Topics related to Mechanical Enterprise, Motion, Additive Print and more.

AQWA, How can I define additional stiffness(hydrostatic/connection stiffness)

    • yoonho choi
      Subscriber

      Hi,

      I try to analysis floating structure using AQWA.

      In order to consider fixed mooring floating structure, I try to various method addtional hydrostatic stiffness, connection stiffness and fender condition.

      However I found some problem, additional hydrostatic stiffness and connection stiffness is used not hydrodynamic response but only hydrodynamic diffraction anlaysis.

      I want to find results using hydrodynamic response, Frequency Domain Statistics, and others.

       

      Please let me know How can I define addtional stiffness in Hydrodynamic response analysis

       

       

    • Mike Pettit
      Ansys Employee

      Hello,

      To include your additional stiffness in Hydrodynamic Response calculations, you should define a Connection Stiffness matrix with the appropriate values. Then you need to turn on Beta Options: close the Aqwa Workbench editor, from the main Workbench page navigate to Tools > Options > Appearance, and check the Beta Options checkbox (near the bottom of these settings). Re-open the Aqwa Workbench editor, and you should find an option 'Include Linear Connection Stiffness Matrices' at the bottom of 'Common Analysis Options' in the Hydrodynamic Response Analysis Settings.

      I hope this helps.

      Mike

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