tuna55
tuna55 Dork
12/10/10 3:13 p.m.

http://www.motoiq.com/magazine_articles/articletype/articleview/articleid/6/pageid/15/getting-rid-of-the-bling-to-give-it-some-sting-project-mistubishi-evo-viii.aspx

The FEA "analysis" is laughable. make a pretty picture with no scale for the press, or just not understand how to do FEA? Which is it?

unevolved
unevolved HalfDork
12/10/10 3:27 p.m.

I'm guessing the former. Mike Kojima's articles usually come across as pretty well written.

bigbens6
bigbens6 New Reader
12/10/10 3:54 p.m.

it is also conceivable that they HAD said information but did publish it at the manufacturers request or chose not to publish it for space reasons or just felt it unnecessary...

FlightService
FlightService Reader
12/10/10 6:29 p.m.

FEA has a few uses depends on what they are using it for. I think in the context of the article it serves it's purpose. You can plainly see where the design limitation is in that wheel.

What I would like to see is the constraints and loading conditions, not just the scale.

FlightService
FlightService Reader
12/12/10 4:29 p.m.

Here is a link if you want to see some of the work we did back in the day.

Recumbant trike design and analysis

mistanfo
mistanfo SuperDork
12/12/10 6:44 p.m.

Well, it is obvious to this layman that there wasn't an even load applied to the wheel, I too would like to know what the load and it's vector was. Allow me to manipulate that piece of data and I can make overcooked pasta look super rigid.

FlightService
FlightService Reader
12/12/10 6:49 p.m.

In reply to mistanfo:

Had to be some sort of load, or no pretty pictures.

pinchvalve
pinchvalve GRM+ Memberand SuperDork
12/12/10 6:57 p.m.

Dropping a load usually does not lead to a pretty picture,

unevolved
unevolved HalfDork
12/12/10 7:30 p.m.
FlightService wrote: In reply to mistanfo: Had to be some sort of load, or no pretty pictures.

Yeah, looks like they just applied a static load, there's no stress in the spokes at 12 o'clock and 6 o'clock in the picture, just tension and compression at 3 o'clock and 9 o'clock.

I think this is a standard case of 99.9% of that site's visitors not even knowing what FEA stands for. I wouldn't bother explaining something like that either.

tuna55
tuna55 Dork
12/12/10 9:26 p.m.

Pretty disgusting, really. Obviously no realistic loading or constraining conditions, and yeah, no scale, so pretty little light blue globs could be 200% of the yield strength of the material.

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