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10-17-2009, 02:19 PM
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#121 |
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Post Whore!
 
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So what do you guys think. Took an overnighter, about 15 hours, and 155 parts to get this project completed for a presentation.... Thank god my library has a 24 hour lab.
Last edited by xpertsnowcarver; 10-19-2010 at 11:26 PM.. |
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06-03-2010, 07:53 PM
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#122 |
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Post Whore!
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Anyone have the Maple software package? I need to do four problems. Looking for a free trial or someone local who has the program.
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06-03-2010, 08:06 PM
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#124 |
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Post Whore!
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06-03-2010, 08:30 PM
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#126 |
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Post Whore!
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What? The rendering I made back in October?! Where have you been?? lol
That was for ME233. Earned an A in that class.  |
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06-04-2010, 12:02 AM
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#128 |
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Post Whore!
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No I didn't. I just set the standard.
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06-04-2010, 07:52 PM
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#130 |
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Post Whore!
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How so? The requirements called for a top speed of 5 mph and must traverse hills with max grade of 30% with a 50cc engine. Worm gear is the best way to go for low speed high torque.
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06-05-2010, 07:40 AM
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#132 | |
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Zilvia FREAK!
 
Join Date: Aug 2005
Location: Orange Park, FL (Jax)
Posts: 1,468
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Quote:
__________________
Eye on the Prize |
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06-05-2010, 10:19 AM
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#133 |
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Post Whore!
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Yes I do!! I'll PM you!
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06-06-2010, 01:56 PM
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#134 | |
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Zilvia Member
 
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Quote:
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06-06-2010, 04:47 PM
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#135 |
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Post Whore!
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It sounded pretty silly at first but made sense once I started working on it. If I recall correctly, we were asked to design a cart for firefighters to clear brush with the use of a weed whacker.
The engine of the weed whacker is the same engine needed to power the car. The cart is remote controlled (speed and direction) by the firefighter who walks along side it. Once the firefighter reaches an area to clear, he needs to be able to quickly detach and assemble the weed whacker. Weight of cart is limited to 300lbs with a 100lbs payload. The cart's center of gravity must be considered when traversing incline grades of 15%. The cart must also be able to traverse through creeks 6" deep. There were a few other requirements. We went with a lot of parts that were already made. The weed whacker is a 50cc propane powered engine. Assuming we had a mini propane tank for the weed whacker and a big propane take on the cart, the firefighter would be able to travel and clear 7.xx miles of brush. |
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06-06-2010, 04:55 PM
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#136 |
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Zilvia Member
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Sounds like a real cool project. My only suggestion would be to a add a bunch of fillets to avoid all the stress risers you have. Although, at 5mph, I'm sure that really won't be an issue.
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06-06-2010, 05:10 PM
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#138 | |
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Post Whore!
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Quote:
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06-06-2010, 08:17 PM
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#139 | |
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Post Whore!
Join Date: Apr 2007
Location: Covina
Age: 33
Posts: 2,844
Trader Rating: (8)
Feedback Score: 8 reviews
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06-06-2010, 10:36 PM
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#140 |
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Zilvia Member
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I don't know where you learned your physics, but sharp corners cause larger stress concentrations than something rounded.
Fillet (mechanics) - Wikipedia |
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06-06-2010, 10:38 PM
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#141 |
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Post Whore!
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^I agree.
Ruben: What do you mean? Where are we talking? Do you mean the unnecessary fillets I put on the worm driven gear? That I can agree with. |
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06-06-2010, 10:41 PM
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#142 | |
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Zilvia Member
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06-06-2010, 10:46 PM
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#143 |
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Post Whore!
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Right. I just have a feeling we are misunderstanding what he's trying to say. Maybe he meant to be more specific.
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06-06-2010, 11:53 PM
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#145 |
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Post Whore!
Join Date: Apr 2007
Location: Covina
Age: 33
Posts: 2,844
Trader Rating: (8)
Feedback Score: 8 reviews
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lol you are correct I just misinterpreted what I was saying. (Damn you finals!)
But yes, the fillet size, up to a point will reduce stress concentrations, allowing for an increased stress on a part, where considering infinite life cycles. |
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10-19-2010, 06:50 PM
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#147 |
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Zilvia Addict
 
Join Date: Dec 2003
Location: oklahoma
Age: 35
Posts: 802
Trader Rating: (2)
Feedback Score: 2 reviews
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So how are you guys doing this semester??? What classes are you taking?
Im a PE major This semeter im taking, strengths of materials, engineering professionalism, Chem II and geology. 14 hours. Strengths is pretty much kicking my but right now.
__________________
instagram: mothon22 |
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10-19-2010, 10:52 PM
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#149 | |
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Post Whore!
Join Date: Apr 2007
Location: Covina
Age: 33
Posts: 2,844
Trader Rating: (8)
Feedback Score: 8 reviews
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Currently I'm taking fluid mechanics II, fluid mechanics lab, heat transfer, material science lab, and a manufacturing processes course. I am DYING of sleep, and heat transfer is owning me at the moment. |
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10-19-2010, 11:22 PM
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#150 |
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Post Whore!
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Quit your bickering! Instead of being on Zilvia, you should be doing your work or sleeping. lol
Wishing I had the same course load as you. |
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