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Capstone Design Presentation April 20, 2001

Capstone Design Presentation April 20, 2001. Jason Harris Ben Breazeale Greg Gonzales Jason Molina (Analysis) (Team Leader) (Web/Graphics) (Secretary). Presentation Outline Introduction & Background Logistics Design Analysis

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Capstone Design Presentation April 20, 2001

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  1. Capstone Design Presentation April 20, 2001 Jason Harris

  2. Jason Harris Ben Breazeale Greg Gonzales Jason Molina (Analysis) (Team Leader) (Web/Graphics) (Secretary) Jason Harris

  3. Presentation Outline • Introduction & Background • Logistics • Design • Analysis • Wrap-up Jason Harris

  4. Sponsored by the Institute for Affordable Transportation (IAT) • Performance requirements • Cost requirements • National competition in Indianapolis May 26th Jason Harris

  5. 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) Jason Harris

  6. 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 Jason Harris

  7. 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. Jason Harris

  8. Jason Molina

  9. Jason Molina

  10. W. L. Gore donated steel • Facility Services donated a vehicle • Daihatsu • C&D Mold, Steel donated • Big thanks to Don McCallum Jason Molina

  11. 1981 Daihatsu Hijet Engine: 547 cc, 2 cylinder gasoline Wheelbase: 70.75 inches Bed: 72 inches Close match to original design Jason Molina

  12. Jason Molina

  13. Jason Molina

  14. Jason Molina

  15. Jason Molina

  16. Where we started Greg Gonzales

  17. Greg Gonzales

  18. What we added Greg Gonzales

  19. Greg Gonzales

  20. 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 Greg Gonzales

  21. Dean’s Spot hehe ;) • Vehicle will tip fully loaded at 290 Greg Gonzales

  22. 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 Ben Breazeale

  23. Case 1: • Frame joint • Result: Stress of 350 MPa • Factor of safety <1 Ben Breazeale

  24. Case 2: • Frame with gusset plate • Result: stress of 180 MPa • Factor of safety 1.64 Ben Breazeale

  25. Gusset close-up 300 lb load • Moves stress concentration away from the weld Ben Breazeale

  26. Ben Breazeale

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  31. The Dean’s Car…DOH!! Ben Breazeale

  32. Finish Web page by May 4th • Compete in the national design competition in May via website • Submit design to IAT May 26 Ben Breazeale

  33. ? Ben Breazeale

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