Solidworks webcast - Motion Simulation on Formula SAE car

[Mechanicaldan]

There is going to be a Solidworks webcast on October 9 titled, "Using Motion Simulation to Optimize Design of a Formula SAE Race Car."

http://www.solidworks.com/pages/news/COSMOSWebcast_CSUN_100906.htm

[Mechanicaldan]

There is going to be a Solidworks webcast on October 9 titled, "Using Motion Simulation to Optimize Design of a Formula SAE Race Car."

http://www.solidworks.com/pages/news/COSMOSWebcast_CSUN_100906.htm

[Kenny T Cornett]

Very neat webcast. I can't wait to get the SolidWorks software and start ripping into that stuff. Perviously we have been designing (for the past month) with just SusProg3d, Matlab, and AutoCad. It will be nice to design solid models and be able to dump them straight into FEA and motion sim.

I figured that things like constraints and loads would transfer from SW to Motion to Works... but it was far more fluid than I thought.



I have to wonder, aside from needing a hideously large amount of time on your hands with nothing to do, would it be possible to simulate the entire suspension movement based on a set of curves gererated by a GPS (i.e. grab the motion plot and apply the figures from your last autoX). It just felt a little sterile doing one wheel at a time and not considering vehicle motion as a whole (this may have just been the presentation and not the actual results they generated)

[BasTijs]

anyone recorded this session?

[projektdrift]

i second that request for a recording of the webcast

[Jack Reany]

Our team at Lehigh University is in its second year using Solidworks as the primary design program. We have put together a suspension simulator in Solidworks that uses Cosmos Motion to put the car through its paces and output measurements of castor, camber, role center, etc. The parts that make up our suspension are given rather generic looking geometry which is driven off a single Excel spreadsheet containing the 3D coordinates of the suspension hard points. With a couple of clicks we can update our entire suspension geometry, put the car through some preset motion, and graph the quantities of interest. We give the parts their actual weights, the tires their approximate spring constants, etc. and can do dynamic simulations such as the one shown here (where we drop the car from 1" droop and demonstrate its slightly underdamped motion.)

When the suspension geometry is finalized we drop in a rigid spring that holds the car at ride height, apply forces to the suspension at the center of the tire contact patch, and make Cosmos develop the load cases on each member of the suspension. All possible combinations of lateral, bump, braking and acceleration forces can be investigated literally in minutes.

We then use these load cases to design the actual parts, and test them in Cosmos FEA. As a final step we mate the parts back into the suspension simulator and put the car through its extremes of motion to check clearances.

We have dabbled in making a full car simulation in Solidworks, as the thought of cool videos with our car running over virtual bumps is neat. However, our inability to model the tire accurately makes this less than useful.

http://i110.photobucket.com/albums/n114/lehigh_jack/Simulator.gif

[Kenny T Cornett]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by BasTijs:
anyone recorded this session? </div></BLOCKQUOTE>


There is a whole SLEW of recorded webcasts... including an engine analysis one that is also from CSU

This webcast will be published soon...

http://www.solidworks.com/pages/news/seminars/archives_links.html#Analysis2

[Eric K]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Kenny T Cornett:
There is a whole SLEW of recorded webcasts... including an engine analysis one that is also from CSU

This webcast will be published soon...

http://www.solidworks.com/pages/news/seminars/archives_links.html#Analysis2 </div></BLOCKQUOTE>

w00t! I had no idea they did that, now I can stop kicking myself for all those webcasts I missed.

[kwancho]

http://files.solidworks.com/COSMOS/Webcast_Archives/COS...tion_CSUN_100906.wmv (http://files.solidworks.com/COSMOS/Webcast_Archives/COSMOSMotion_CSUN_100906.wmv)
It's on the page now, the first one under Motion.

[Joe Wilkie - SolidWorks]

See the webcast and related white paper:
http://www.solidworks.com/pages/products/edu/documents/...ehicleSuspension.pdf (http://www.solidworks.com/pages/products/edu/documents/Motion_VehicleSuspension.pdf)

[Chris Allbee]

are these webcasts just audio or am i missing a codec to see the video?

[Joe Wilkie - SolidWorks]

Windows streaming video. Be sure you've got a fairly recent update on your Windows Media Player and all should work fine.

[D-Train]

We've been working on something similar for our '06 setup in motionworks.

http://img134.imageshack.us/img134/5280/shockanalysishq5.jpg



CLICK HERE TO WATCH (http://www.youtube.com/watch?v=Ir_XpfkHxAQ)



(apologies for the lack of sound)

[muffrx4]

impressive. why no sound?

[TG]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by D-Train:
We've been working on something similar for our '06 setup in motionworks.

http://img134.imageshack.us/img134/5280/shockanalysishq5.jpg



CLICK HERE TO WATCH (http://www.youtube.com/watch?v=Ir_XpfkHxAQ)



(apologies for the lack of sound) </div></BLOCKQUOTE>

Do you have your roll center above your CoG? The shock displacements in the video indicate as such. It looks like your car would roll into the turn instead of away.

[D-Train]

Nah, just messed up the direction of displacements when converting our motec data... was hoping nobody would notice.