FSAE Tire Test Consortium -- Round 4

[Shashi]

Hello All.

We would be joining the TTC in a week or so. I was just curios to know which tires have been tested in this round.

[BillCobb]

Remove the hysteresis loop with a cross correlation function which identifies the phase shift necessary to equilibrate the up and down sweep. This phase shift (converted to distance traveled) is useful and informative in dynamic vehicle response modeling, especially shock absorber tuning (Among other things...) I may have some Matlab code to share laying around here somewhere. Lemme see...

[BillCobb]

I found an older PowerPoint presentation of mine with the methodology I just posted on. Is there a way to share this with all of you? It describes the benefits of post processing the raw data to eliminate the hysteresis.

[BillCobb]

Try this:

http://my.engineering.com/pg/f...f-hysteresis-removal

[BillCobb]

Try this:

my.engineering.com/pg/file/zzvyb6/read/219822/surf-tirf-hysteresis-removal

[DougMilliken]

Originally posted by Shashi:
I was just curios to know which tires have been tested in this round.

I believe the following is correct, but I don't have the tires in front of me to check:

Dunlop 175/505R13
Goodyear 20.0x7.0-13
Hoosier 20.5x6.0-13
Hoosier 20.5x7.0-13
Hoosier 20.0x7.5-13
Michelin 16/53-13 S6B

Continental almost sent tires, but weren't quite ready.

Final list will be posted on the TTC website with additional details:
http://www.millikenresearch.com/fsaettc.html
-- Doug Milliken for the TTC

[Edward M. Kasprzak]

Calspan delivered the Round 4 data yesterday. It will take me a day or two to do some quick checks and organize it for distribution. We'll release the raw data first, and the models (Stackpole, Milliken) will follow when they're ready. Stay tuned....

Edward M. Kasprzak

[R. Alexander]

What's the current status?

[Stocky Fast 1]

I signed up for the TTC website and have been waiting for about 6 weeks to get the approval e-mail from the administrator. Any news on why this would take so long. It was recommended earlier in the forums to sign up there to keep track of the status and such, but I have been forced to try to keep up to date here.

[Edward M. Kasprzak]

Status Update: Calspan delivered the last of the data files to me this morning. When I checked through their initial delivery I found a few small problems. We'll finish putting the distribution package together and get it out as soon as we can.

As for sign-up problems on the secure forum, I'm not happy that I keep hearing stories about sign-up difficulties. Please contact Brian once again about registration. Doug Milliken has been working directly with Brian (I haven't), so I'll ask Doug to see what the story is.

My apologies for the difficulties. We're trying to make things easier/better, not worse!

Edward M. Kasprzak