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[GAMBIT] Creating 3d Elbow geometries of different bend angles

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Old   September 29, 2011, 06:48
Default Creating 3d Elbow geometries of different bend angles
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Hi all,

I want to create a 3d elbow geometries of angle 90, 60, 45 in gambit 2.3.16. Please help me i doing this. I know it is pretty simple job but i am not able to do it.
It would be very nice if anyone can help me and guide the steps that should i follow to create it.

Thanks & Regards
Shubham Mishra
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Old   September 29, 2011, 06:56
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*create first cylinder as volume
*create second cylinder as volume
*move (rotate) second cylinder with desired angle
*move (translate) second cylinder with desire vector
*unite both volumes (boolean operation)

http://my.fit.edu/itresources/manual...reate_cylinder
http://my.fit.edu/itresources/manual...mg0205.htm#492
http://my.fit.edu/itresources/manual...eom_volm_unite
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Old   September 29, 2011, 07:24
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Thanks for prompt reply
As suggested by you, i had already tried it but i am not able to get the smooth bend at the joining face. I also attach the picture of it. Kindly suggest some more steps for it..
Thanks in advance
Shubham
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File Type: jpg Elbow.jpg (87.0 KB, 60 views)
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Old   September 29, 2011, 07:28
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can you sketch what you are expecting in this case (90°)
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Old   September 29, 2011, 07:29
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ya its elbow with 90 degree bend angle
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Old   September 29, 2011, 07:41
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ah ok, I missed "bend angle"

Then you can use sweep function: draw the path for your geometry (chain of axis), create the source disk and sweep with edges

*create the source disk (cap cylinder)
*from its center (you need to create the center as vertice) sweep it with desire height (will be cylinder height)
*continue the path, by creating the arc (for example you can create 2 vertices, but there are other methods)
*finish the path by sweeping end's arc-vertice with desire cylinder height
*Once your path is generated you can sweep your disk with edge (maybe you need to merge the 3 edges)
http://my.fit.edu/itresources/manual...e_create_sweep
http://my.fit.edu/itresources/manual...dge_create_arc
http://my.fit.edu/itresources/manual...eom_volm_sweep
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Old   September 29, 2011, 08:04
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while sweeping it, an ACIS error 73006 message: The chain to be sweept is parallel to the path..
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Old   September 29, 2011, 08:06
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what are you sweeping= vertice or surface?
post picture
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Old   September 29, 2011, 08:11
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Max find this picture
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Old   September 29, 2011, 08:14
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sweep surface with edge
If it failed: split your path in 3 portions: line, bend, line and sweep surface 3 times: one time with first line, second time with bend and finally with second line
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Old   September 29, 2011, 08:42
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no surface created while sweeping through bend...
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Old   September 29, 2011, 08:52
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ok then I understand sweeps along lines are ok.
Check your radius it seems to be quite small, that could be the reason
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Old   September 30, 2011, 00:42
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What radius are you talking about??
Bend radius or radius of cylinder?
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Old   September 30, 2011, 00:46
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What radius are you talking about?
Bend radius of radius of cylinder??
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Old   September 30, 2011, 00:49
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bend radius
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Old   September 30, 2011, 01:36
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I has increase the bend radius but it gives me same error..
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Old   September 30, 2011, 02:19
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*enable perpendicular option in sweep surface tool*Your bend radius has to be greater than cylinder radius else you have self-intersection problem
Sans titre.png
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