maya ncloth vs. max2010 cloth

[DreamWriter]

The 3ds max 2010 now support tearable cloth and inner pressure settings. But maya's ncloth is much stable and accurate than 3ds max's cloth.

For ncloth is much physically accurate, 3ds max cloth still good enough for game vfx or design visualization if you use it right.

[dim1984kimo]

Maya nCloth is powerful than you could imagine.

[roberto65]

hi guys,
thanks for the quick response. to become more precise, i posted a screenshot of the max-cloth-interface.
http://gagliano.at/ng_links/cg_society/ncoth_vs_cloth/
could someone please do the same with the ncloth-interface?
my specific problem is, the cloth doesn´t really behave as you would expect in real-world.
the cloth-object balloons up too much (volume becomes nearly twice the original one) an too much tends to become a sphere without any crinkles, no matter how much one constraints the bending- and stretching-parameters.
as i said i am working for real-world-inflatable-production. i build a 3d-concept-model, then i do the paneling and have it all sewed together. for this process it would be extremely helpful to get an idea in early development stages of how the final product would behave in real-world.
thanks again for your input
roberto

[Frankyboy]

Everything depends on the scale and parameter values. If you increase the stretch resistance, for the same pressure it will not balloon up as much. The cm/unit setting also plays a crucial role. Can you post a scene file to illustrate what you are attempting to simulate and how the simulation is expected to behave?

[roberto65]

hi frankyboy,
Everything depends on the scale and parameter values. If you increase the stretch resistance, for the same pressure it will not balloon up as much. The cm/unit setting also plays a crucial role. Can you post a scene file to illustrate what you are attempting to simulate and how the simulation is expected to behave?
thanks a lot, these hints were very useful, especially the cm/units setting.
there is still a little bit too much streching, but its a lot better now.
i made a file, which tries to compare two swim rings:
one made of two rings, the other made of two stipes. the simulation is not included, as it blows up the file to 30 mb, you have to calculate the simulation. you can download the file here (http://www.gagliano.at//ng_links/cg_society/rings/) (its too large for the forum)
its a max file, hope you can check it somehow (are you on maya?)
maybe this is the wrong place to post a max-file, but as i said i want to compare with ncloth...
i found some glimpses on the ncloth interface in the official maya-online-help on the autodesk-site and it looks quite similar to max´s cloth interface (though it has some extra params, for example incompressability and air tightness)

thanks again for your help roberto

[Frankyboy]

Torus01's surface area is increasing by about 7.4%
Torus03's surface area is increasing by about 4.1%

Do you have any real-world data to compare this to?
In the real-world case, what pressure are you applying inside the rings?

[roberto65]

[/QUOTE]Do you have any real-world data to compare this to?
In the real-world case, what pressure are you applying inside the rings?[/QUOTE]

the floating tire was just a first test using roughly estimated values. i have no clue which units the "pressure"-param uses, it accepts values from 0 to infinite (as fas as i can see, i tested 1million and it was simulated)
in real world i produce small- to mid-size inflatables, approximately 2-15m in diameter. the are permanently inflated by superchargers (as the cloth is not air-tight). at the moment i am not in the office, i can send some pics of examples later, also the exact values of l/min that the superchargers provide ...
of course it would be great to simulate the inflation as "real-world" as possible, but as far as i can see, 3dsmax at the moment does not allow any input for the air-tightness (unlike maya), so there will always be some inaccurateness.
i also wonder if its better to use garment-maker as input for the cloth to get better simulation and more control on seam-behaviour.

Torus01's surface area is increasing by about 7.4%
Torus03's surface area is increasing by about 4.1%

can you measure this within max? or do you export (eg. to rhino)?

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