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[DesignModeler] Problems with revolve (axis intersects all profiles)

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Old   November 6, 2012, 09:24
Post Problems with revolve (axis intersects all profiles)
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Hi all,

I have imported a coordinates file to create a 3D curve. It will close up the curve. When i tried to revolve a line body along an axis, it will give me an error telling me that my axis intersects all profiles. I'm trying to create something like a "bowl".

But when i create points and revolve, it can give me the "bowl" shape. But its not a surface. How can i solve this?

Thanks alot!



I have attached the coordinates file.


3D_Coordinates_ANSYS.txt
Attached Images
File Type: jpg 3D CUrve.jpg (85.0 KB, 31 views)
File Type: jpg 3D point.jpg (86.8 KB, 27 views)
File Type: jpg 3D point_revolve.jpg (93.6 KB, 29 views)

Last edited by natur3; November 6, 2012 at 09:42.
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Old   November 6, 2012, 11:00
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can you share your agdb file... your project after revolving ?
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New to ICEM CFD, try this document --> http://goo.gl/G2gkE
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Old   November 6, 2012, 11:19
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You can't revolve something that extends across the axis of revolution. In this case, both negative and positive values of z and x exist. I imported only the first 53 points and was able to revolve the line body. I closed the center with a surface patch. If you wan't to create a surface more exact than that, which involves all of your coordinates, I think you will have difficulties in Design modeler.

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Last edited by jrunsten; November 7, 2012 at 05:32.
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Old   November 7, 2012, 05:21
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I have attached my projects after revolving.

https://www.dropbox.com/s/biix2j3zhm...Geom_line.agdb

https://www.dropbox.com/s/ur6hc1xowm...eom_point.agdb

Quote:
I imported only the first 53 points
Why the 1st 53 points? How do you get that?
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Old   November 7, 2012, 05:31
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Quote:
Originally Posted by natur3 View Post
Why the 1st 53 points? How do you get that?
Simply because the first 53 points describes one of the slopes from beginning to the (almost) axis. I bet you could do the same with point 54-105, or somewhere around that number, but it was more convenient to choose the first since i didnt need to change the point numbers in the point list.

Done simply by opening the text file and deleting the rest of the points. Now if you do this and the import all of the points as a curve again you can see that the "bowl" represent these points pretty well, but it's not perfect:

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Old   November 7, 2012, 06:36
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I see.

So if I want to be more accurate, I have to get the points from the beginning to exactly at the axis?
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Old   November 7, 2012, 06:41
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Well yeah, but other than that, the rest of the points won't be represented (in case it's not completely axisymmetric, which it doesn't look like). If you revolve another 8th of you point set, you might get a different surface. What data is it anyway? Measurements of some kind?
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Old   November 7, 2012, 07:13
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I see,

Its actually the outer cornea of a human eye. (From optical coherence tomography images)

I still have the other parts of the eye to model, eg, iris, inner cornea,etc

Since I'm still learning ANSYS, I was thinking to start from the outside, and continue to model the rest after I have model 1 part.
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Old   December 14, 2012, 07:13
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I have managed to remove the connection of the lines. Now i have 4 individual lines and if possible I want to revolve this 4 lines into one single surface as it will be more accurate.


Last edited by natur3; December 14, 2012 at 07:40.
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Old   December 14, 2012, 07:43
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Can't be solved using a Revolve. Maybe someone has some suggestions, but I think you need another tool rather than Design Modeler.
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Old   December 14, 2012, 07:53
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Other tools?

So far, I only know autocad and ansys can construct 3d models.

Anyone has any other suggestions/software?
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Old   July 16, 2014, 06:31
Default pls help me to ansys-cfx-designmodeler
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Hi
how to design figure 1,2 ?
i drew figure 3 .
I want figure 3 Circumference of a circle.
how to do ??
pls help me
thanks a lot

saeed.bahrami91@yahoo.com
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