bridge report
Post on 25-Feb-2016
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Bridge Report
Team Total Domination
Outline
Introduction…………….. Zach Chaviers
Prototype……………….. Ali Nikkhah
Final Design……………. Bobby Schneider
Conclusion……………… Derrick Wang
Introduction Prototype Final Conclusion
Problem
Build most efficient bridge
Efficiency:
Limited to 125 tongue depressors
Introduction Prototype Final Conclusion
bridge
load
mm
Background
Warren Truss
Component testing
Four-step process
Introduction Prototype Final Conclusion
Prototype Design
3 preliminary designs
Criteria for design
• Simple
• Triangle-based
• Allow for easy layering
Introduction Prototype Final Conclusion
Construction
Warren Truss design used
Built quickly
Main goal: test structure
Introduction Prototype Final Conclusion
Before Testing
Introduction Prototype Final Conclusion
Test
Stable load increase
Bent at joint
Support popped out
Introduction Prototype Final Conclusion
Test
Introduction Prototype Final Conclusion
Results
Max load 397 pounds
Efficiency: 630
Joints weak
Introduction Prototype Final Conclusion
Final Design
Fix weaknesses
• Joints
• Glue type
• Precision
• Symmetry
Introduction Prototype Final Conclusion
Construction
Graph paper
Clamping
Glue Coating
Introduction Prototype Final Conclusion
Before Testing
Introduction Prototype Final Conclusion
Completed Final Bridge
Test
Stable load increase
Twisted
Did not break
Introduction Prototype Final Conclusion
Test
Introduction Prototype Final Conclusion
After Testing
Introduction Prototype Final Conclusion
Dead Bridge
Results
Max load 811 pounds
Efficiency: 1080
71% more efficient
Introduction Prototype Final Conclusion
Summary
Truss Design
Prototype performed well
Minor changes made
Improved performance
Introduction Prototype Final Conclusion
Improving Final Design
Stabilizers created rectangles
Add triangles to prevent twisting
Introduction Prototype Final Conclusion
References
http://cee.carleton.ca/Exhibits/Tacoma_Narrows/
http://www.nwrain.com/~newtsuit/recoveries/
narrows/narrows.htm
http://www.bridgemeister.com/pic.php?pid=839
Introduction Prototype Final Conclusion
Any Questions?
Team TOTAL DOMINATION
Ali Nikkhah
Zach Chaviers
Derrick Wang
Bobby Schneider
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