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[DesignModeler] Spar Geometry

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Old   May 30, 2017, 07:22
Default Spar Geometry
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Sal Far
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Hi everyone!

I am modelling a truss spar! in the geometry stage, I put a box on top which could represent the topside. I put a cylinder under that which can play the role of the Hull of the truss spar! when I wanna assign them all as the Thin layer, I am encountering an error which says " Operation would result in illegal T surface bodies".

I think it is because When I put the box on top of the cylinder, I have to make a hole in the box cylinder sharing area but I cannot do that!

is there anyone out there, who has faced the same issue or know what is the solution!

Thank you kindly in advance!

Regards,
Sal
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Old   May 31, 2017, 00:50
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post your geometry
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Old   May 31, 2017, 05:40
Default Spar simple first stage geometry
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Sal Far
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Hey there,

Thank you for your respond!

Just attached it!

Please have a look and let me know what you think!

Thanks in advance!

Regards,
Salman
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File Type: zip Geom.zip (41.7 KB, 6 views)
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Old   May 31, 2017, 20:04
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i dint get any error when I used it
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Old   June 6, 2017, 03:54
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Sal Far
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Thanks, I found the problem and fixed it.
When I was modelling, I modelled the cylinder as the thin/surface body and the rest were solid. then, when I wanted to convert all bodies to Thin that message came up!
however, when I keep everything as the solid block and convert altogether, I had no issue with that! all good now about my modelling, but I found another issue with my load mapping! I transferred all wave loads from AQWA to Mechanic but when I wanna check for example the force reaction, I saw that my model has been broken on water line! and I got an error which says " A solver pivot warning or error has been detected in the UY degree of freedom of Node 4391 located in Hull Drag Tube. This is Usually a result of an ill condition matrix possibly due to unreasonable material properties, an under-constrained model, or contact related issues." . can you kindly please give me any advice to fix this?

if you need to check my model, let me know and I will Archive and zip it and send it for you!

Thanks again Kapi for your time and attention!

Cheers,
Sal

Last edited by Sal-Perth; June 6, 2017 at 05:36.
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