honeycomb modeling
honeycomb modeling
(OP)
This is my first topic on Eng-Tips, so hello to anyone.
I've got a problem with modeling a honeycomb. I did one cell of honeycomb panel with some faces - which I need to have no double faces, when use pattern, and here everything is ok.
The problem starts with sewing all cells together. I extruded "L" direction foil in one operation, and "W" direction foil in second. I know that there are problems with sewing "T" surfaces, but I need to trim edges of panel, and cut place for insert in the middle. Does anyone know, what should I do to get a expected result?
Picture of trying add sew
[url=http://www.freeimagehosting.net/75ulp]
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I've got a problem with modeling a honeycomb. I did one cell of honeycomb panel with some faces - which I need to have no double faces, when use pattern, and here everything is ok.
The problem starts with sewing all cells together. I extruded "L" direction foil in one operation, and "W" direction foil in second. I know that there are problems with sewing "T" surfaces, but I need to trim edges of panel, and cut place for insert in the middle. Does anyone know, what should I do to get a expected result?
Picture of trying add sew
[url=http://www.freeimagehosting.net/75ulp]
[/url] 




RE: honeycomb modeling
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: honeycomb modeling
If possible, you might want to describe a bit more in detail what the purpose of the honeycombs are - I understand you might be trying to simulate something that's "thin-walled" but the face to face measurement is 0 as you're modeling it, and other than for visualization, I do not believe that is realistic. If you were to allow a slight thickness between the honeycombs, then this wouldn't be an issue...even something as small as 0.001mm might work. If you do so, you may wish to start over with a Modeling Distance tolerance that at least equals your smallest distance. John may wish to elaborate, but I seem to recall that it was NOT recommended to change tolerances as you created features, hence why I suggested starting over.
Tim Flater
NX Designer
NX 7.5.4.4 MP8
WinXP Pro x64 SP2
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB
RE: honeycomb modeling
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: honeycomb modeling
I need this geometry to simulate a behavior of aluminium insert in sandwich material (cfrp + al honeycomb), with the potting material around insert. In simulation module there is no problem with that geometry to stich all with even automatic stiching, but i got a problem with trim honeycomb to size 140x140 and with cut foil around insert, because this is a pattern feature and it is not a single.
This is only a middle surface of honeycomb, where I'll put thickness in fem.
Finally I solved the problem in such way - i trimmed all faces with boundary edges of specimen, and hide faces I did not need (still with few problem with trimming). But if anyone knows better way to do what I need, please tell me.
Some screen shots to show the problem.
Thanks for answers
http://www.freeimagehosting.net/xf36n
http://www.freeimagehosting.net/iky4r
http://www.freeimagehosting.net/ra3zp