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Totally Lost: Rendering Animations Of Deformed Parts


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#1 cash68

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Posted 31 May 2011 - 09:16 PM

I've been contacted by a client with a really strange request, and I'm not even sure where to start. They are a small scale bike manufacturer, and they would like videos created that show their frames deforming under pressure. The idea is to show how their joints/tubes are stronger than the competition. The loads/animations DO NOT NEED TO BE accurate or scientific, but they want them to look very technical and advanced to a layperson. I have their CAD files in solidworks, and I tried using Cosmos Flow as well as Simulation, but both result in very poor quality animations, the solids get turned into a mesh, not a rendered, glossy, frame.

Where the hell should I start? What software would I need for this?

#2 Pawel Keska

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Posted 01 June 2011 - 07:09 PM

You should use Simulation add-in (from SolidWorks Premium) not flow...

Example here>>>

#3 cash68

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Posted 01 June 2011 - 10:31 PM

I am. But I am not seeing an option to do a HIGH QUALITY RENDER of the deformation, it only does it with a crappy mesh view, not even using real time 3d effects like realview.

#4 Pawel Keska

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Posted 02 June 2011 - 08:59 AM

I am. But I am not seeing an option to do a HIGH QUALITY RENDER of the deformation, it only does it with a crappy mesh view, not even using real time 3d effects like realview.

You cannot view the results of analysis in real-time, all time must be re-calculated. So, there is no option to set HQ renderings like in PhotoWorks/PhotoView. Of coure you can display model with mesh or not, you can set deformation scale and choose colours etc.
fram2.jpg
And animations settings.
fram1.jpg
I'm not sure what you exactly try to do, show k-factor or displacement?

#5 Cyberdemon

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Posted 02 June 2011 - 02:49 PM

Pawel,

He is trying to create a marketing-type animation, not an actual simulation.

Cash,

The only thing I can think of (Besides what I mentioned on 77) would be to build the part you want to show flex on (top tube?) with a parametric curve that you can modify so that the top tube bends. If you build that so you can increment it slowly you could effectively key-frame the flexing with the parametrics and take a render from the same view for ~30 frames and then assemble them in after effects or some other software.

That may be a lot of work, but wouldn't involve learning new software.

Either that, or just find a 3D animator and subcontract that baby out.

#6 Playdo

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Posted 02 June 2011 - 03:46 PM

Hi Cash,

I've sent you a PM.

#7 Pawel Keska

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Posted 02 June 2011 - 07:36 PM

Pawel,
He is trying to create a marketing-type animation, not an actual simulation.

Ok, but this animation using flex feature cannot show realistic deformation - it needs mesh and FEA calculation. YOu cannot show colours as well, which presents strong enough areas... It is my opinion.

#8 Cyberdemon

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Posted 02 June 2011 - 09:30 PM

If it's for the purposes of marketing it does not need to be realistic. You could easily render a bike that flexes and overlay a colored gradient to "Simulate" the effect of real FEA analysis.

If you are making a video for a web page of a bicycle company, you can't expect a person to understand FEA results. But you could expect them to understand Bike A flexing half as much as Competitor B to explain "Stiffness".

(Yes, I understand that there is zero validity to this, but if it's what the client wants they're the ones paying the bills)

#9 Pawel Keska

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Posted 02 June 2011 - 10:49 PM

If it's for the purposes of marketing it does not need to be realistic. You could easily render a bike that flexes and overlay a colored gradient to "Simulate" the effect of real FEA analysis.
If you are making a video for a web page of a bicycle company, you can't expect a person to understand FEA results. But you could expect them to understand Bike A flexing half as much as Competitor B to explain "Stiffness".
(Yes, I understand that there is zero validity to this, but if it's what the client wants they're the ones paying the bills)

ok, you're right ... I am an engineer and looking from a different perspective at some things. Therefore, if I see an animation on webpages looks like a photomontage I don't like that. Sometimes when you show a completely abstract deformation can spoil the effect...

@cash68 - if you need any problem with SW animation I will try to help you

#10 cash68

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Posted 06 June 2011 - 04:43 PM

I just don't think what the client is asking for is possible. Oh well. >shrug<

#11 Playdo

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Posted 08 June 2011 - 01:03 PM

I just don't think what the client is asking for is possible. Oh well. >shrug<


Hi Cash. I'm not sure if you got my PM, but if not, and you'd like to outsource it, then get in touch and we can go through it. I animate in programs specifically designed for this.

Thanks.




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