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ANSYS Aqwa ECAT/NCEL/COMP Error

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Old   August 1, 2018, 17:46
Default ANSYS Aqwa ECAT/NCEL/COMP Error
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Jordan
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Hello,

I am currently working on a simulation in Aqwa which models a vertical fully submerged SONAR device with a point buoyancy at the top. It has 7 cylindrical sensors (modeled as a single structure each), and they are connected by 6 catenary mooring lines [referred to as tube]. There is a seventh mooring line goes from the bottom of the 7th structure down to a fixed point on the seabed [referred to as chain]. Each of the lines is one single catenary section with 100 elements and a length that is exactly the distance of separation between the connection points.

After I modeled all of that and I ran a static stability response module, I got these errors:

EXPECTED A -ECAT- CARD. GOT A -NCEL
COMPOSITE(ECAT) BETWEEN STRUCTURES NOT UNIQUE
TOO FEW/MANY ECAT CARDS FOR PREVIOUS COMP CARD
LENGTH OF UNITY IS SMALLEST VALUE ALLOWED

From my research so far, it seems that this is definitely an issue with the catenary data. As far as what, exactly, is wrong and how to fix it I am stumped. Any help or ideas would be appreciated.

Thanks,
Jordan
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