Jason Harris Capstone Design Presentation April 20, 2001.
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Transcript of Jason Harris Capstone Design Presentation April 20, 2001.
![Page 1: Jason Harris Capstone Design Presentation April 20, 2001.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649ede5503460f94beed3a/html5/thumbnails/1.jpg)
Jason Harris
Capstone Design PresentationApril 20, 2001
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Jason Harris
Jason Harris Ben Breazeale Greg Gonzales Jason Molina
(Analysis) (Team Leader) (Web/Graphics) (Secretary)
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Jason Harris
Presentation Outline• Introduction & Background• Logistics• Design • Analysis• Wrap-up
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Jason Harris
• Sponsored by the Institute for Affordable Transportation (IAT)
• Performance requirements• Cost requirements• National competition in Indianapolis
May 26th
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Jason Harris
Requirements• The top speed should be 25 mph• Carry a four-person load or 770 lbs• Minimum range of 120 miles• Production version should cost less than
$1200 to produce (modified design)
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Jason Harris
• Design and build a working prototype of a BUV
• Provide a full engineering report• Provide CAD drawings and digital video
clips of the vehicle to the public• Complete a financial analysis• A web page that includes all of the
above for judging
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Jason Harris
• Focus on the end user• Enhance the quality of life for the
operator• Components should be made from
generic steel stock so that the operator can repair it without a parts store.
• The vehicle should also be made so that other manufacturers can copy it.
• The goal of this project is to help developing countries.
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Jason Molina
MilestonesDesign Review Presentation March 13Design Review Report March 13Capstone Conference April 20Web Page due May 4Design Document due May 4Graduation May 11National Design Competition May 26
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Jason Molina
15092
170
50
462
0100200300400500
Hours
Number of Hours
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Jason Molina
• W. L. Gore donated steel• Facility Services donated a vehicle
– Daihatsu• C&D Mold, Steel donated• Big thanks to Don McCallum
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Jason Molina
1981 Daihatsu Hijet
Engine: 547 cc, 2 cylinder gasolineWheelbase: 70.75 inchesBed: 72 inchesClose match to original design
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Jason Molina
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Jason Molina
Bill of materials for prototype
ChassisSteel frame materialFrame fabrication Panel materialBrakes, SuspensionWheels and tiresDrive trainSeatsMirrors, accessoriesControlsPaint $12.00Engine
Total $12.00
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Jason Molina
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Jason Molina
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Greg Gonzales
Where we started
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Greg Gonzales
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Greg Gonzales
What we added
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Greg Gonzales
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Greg Gonzales
• Volume assumption of 100,000 units annually
• Based on the Daihatsu Chassis and our modification kit
• Tooling Cost approximately 2.25m• Produced in Africa (close to test
market Ghana)• Purchase Steel from Brazil (low
cost)• Cost per unit<$1200
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Greg Gonzales
• Vehicle will tip fully loaded at 290
Dean’s Spot
hehe ;)
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Ben Breazeale
FEA model:Type: Frame undergoing a large negative acceleration (such as a collision or a fast stop); Static nodal stress.
Load: 300 lbs on roof rack
Material: 1.5 inch box steel (assumed mild steel 1020), same as the frame material. Yield strength is 294.8 MPa
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Ben Breazeale
Case 1:• Frame joint• Result: Stress of 350
MPa• Factor of safety <1
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Ben Breazeale
Case 2:
Frame with gusset plate
•Result: stress of 180 MPa
•Factor of safety 1.64
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Ben Breazeale
• Gusset close-up 300 lb load– Moves stress concentration away from the weld
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Ben Breazeale
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Ben Breazeale
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Ben Breazeale
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Ben Breazeale
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Ben Breazeale
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Ben Breazeale
The Dean’s Car…DOH!!
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Ben Breazeale
• Finish Web page by May 4th
• Compete in the national design competition in May via website
• Submit design to IAT May 26
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Ben Breazeale