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Modification to the floating structure
Quote from Charuka on 27. May 2026, 14:43Hi David,
Im working with QBlade for some time with NREL 5-MW floating structure. Now I need to so some changes to the floating sturucture where I need to increase the three column structure to four columns structure as illustrated in the attached pictures.
If i need to do this changes, I have below questions which need clarifications, Would you kindly provide some guidence here.
1. Can I use any CAD software and improt the file. if so what kind of file format should I use.
2. What are the rest of the parameters I need to identify the do this change
3. Can I use square columns instead of cylindrical columnsKind regards,
Charuka
Hi David,
Im working with QBlade for some time with NREL 5-MW floating structure. Now I need to so some changes to the floating sturucture where I need to increase the three column structure to four columns structure as illustrated in the attached pictures.
If i need to do this changes, I have below questions which need clarifications, Would you kindly provide some guidence here.
1. Can I use any CAD software and improt the file. if so what kind of file format should I use.
2. What are the rest of the parameters I need to identify the do this change
3. Can I use square columns instead of cylindrical columns
Kind regards,
Charuka
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Quote from David on 28. May 2026, 22:20Dear Charuka,
It is not possible to directly import a CAD sketch into QBlade. Instead, the floater geometry needs to be recreated using cylindrical and rectangular elements.
The methodology for setting up a floating substructure in QBlade and defining its associated hydrodynamic modeling is detailed in the documentation:
https://docs.qblade.org/src/user/index_ue.html#substructure-modeling
A good starting point would also be the tutorial found here:
https://docs.qblade.org/src/tutorial/index_tt.html#substructure-modeling-in-qblade
Setting up the model, especially the hydrodynamics, can be quite involved, but this level of detail is what ultimately allows the simulated floater response to match the real dynamics with meaningful accuracy.
Best regards,
David
Dear Charuka,
It is not possible to directly import a CAD sketch into QBlade. Instead, the floater geometry needs to be recreated using cylindrical and rectangular elements.
The methodology for setting up a floating substructure in QBlade and defining its associated hydrodynamic modeling is detailed in the documentation:
https://docs.qblade.org/src/user/index_ue.html#substructure-modeling
A good starting point would also be the tutorial found here:
https://docs.qblade.org/src/tutorial/index_tt.html#substructure-modeling-in-qblade
Setting up the model, especially the hydrodynamics, can be quite involved, but this level of detail is what ultimately allows the simulated floater response to match the real dynamics with meaningful accuracy.
Best regards,
David


