Wheel contest

[Tom Bottiglieri]

Old Faithful -

[petek]

Originally Posted by Greg Needel

not really anything that special but I like it.... .67lbs for the 6 inch

Two words: stress concentration

[Greg Needel]

Originally Posted by petek

Two words: stress concentration

Wheels that don't break were never part of the contest....I would have to analyze these before I built them (I probably wouldn't) but i still think they look pretty.

[petek]

Originally Posted by Greg Needel

Wheels that don't break were never part of the contest....I would have to analyze these before I built them (I probably wouldn't) but i still think they look pretty.

Sorry - guess I shoulda read the rule before posting!

OK, so here's my "keep it stone-age, stupid" entry:



Six of these babies should solve a lot of toppling bot problems!

[Master Dictator]

What program did you use for the stress calculations? Thats kinda useful.

[petek]

Originally Posted by Master Dictator

What program did you use for the stress calculations? Thats kinda useful.

Sorry - I just linked a picture from Google for an engineering company's site. I can't claim to be an expert in the stess analysis field - I just play one on TV, er CD, er - okay, so call me a poser!

[Dan Zollman]

Originally Posted by Master Dictator

What program did you use for the stress calculations? Thats kinda useful.

Inventor 10 and up does stress analysis.

[Greg Needel]

Originally Posted by worldbringer

Inventor 10 and up does stress analysis.

does is a relative word....if you are going to use any FEA software please understand that there is more to it then clicking "analyze" and getting the answer. You must understand mesh size, load positioning, load types, etc. FEA can be great but it can also give you a false sense of security...kinda like a radar detector; it will detect a police officers but won't tell you where they are.

[Dan Zollman]

Originally Posted by Greg Needel

does is a relative word....if you are going to use any FEA software please understand that there is more to it then clicking "analyze" and getting the answer. You must understand mesh size, load positioning, load types, etc. FEA can be great but it can also give you a false sense of security...kinda like a radar detector; it will detect a police officers but won't tell you where they are.

If one understands mesh, load positioning, etc. (which I don't ) can Inventor's stress analysis feature be used to get accurate results?

[Madison]

I needed something stronger than our typical omniwheels because they'll be cantilevered and exposed in the design I'm working with now.

There's no reason wheels can't show a bit of team spirit

[Tom Bottiglieri]

Originally Posted by worldbringer

If one understands mesh, load positioning, etc. (which I don't ) can Inventor's stress analysis feature be used to get accurate results?

I never got Inventors stress analysis to work quite right. I prefer CosmosWorks (a plugin for Solid Works). Inventor will output to ANSYS, though. That probably wont be much help to you now, but maybe when you go to college and there's network licenses