Upload
esmond-atkins
View
215
Download
0
Embed Size (px)
Citation preview
DIFFERENTIAL FOR FORMULA SAE RACE
CAREML4551 Ethics and Design Project Organization
Team 09
Shivana MahesUber Mantovani
Alessandro Tasca
SUMMARY Problem statement
Project description Motivation and goals
Division of Responsibilities Project Timeline Goals Design Considerations Design Alternatives Standards Global Learning Conclusion Questions
PROBLEM STATEMENT Design differential and components for the
2016 FSAE competition Components include housing, mounts, sprocket
Photo credit: audi-technology-portal.de
MOTIVATION AND GOALS
Motivation FSAE is a prestigious
global competition Top engineers attend
and judge entries
Goals Optimize differential for
FIU’s car Optimize power transfer
Photo credit: torsen.com
DIVISION OF RESPONSIBILTIES
Shivana Mahes Calculation and design of housing and spacers,
Solidworks modeling and simulations, written documents
Uber Mantovani Calculation and design of sprocket, springs, and
friction plates, Solidworks modeling and simulations Alessandro Tasca
Calculation and design of gears, prototyping, and manufacturing
PROJECT TIMELINE
GOALS
Reduce weight from current differential by 15%
Maintain current torque bias ratio of 4:1
Photo credit: torsen.info
DESIGN CONSTRAINTS 2016 FSAE rules 45° tilt test-differential cannot leak Withstand engine specifications Location and size of sprocket Safety and reliability Dimension of current drive axle shafts and
CV joint angle Costs
DESIGN CONSIDERATION Location of
differential Engine development Interchangeable
sprocket
DESIGN ALTERNATIVE 1
Alternative 1 Differential using gears only
Simple design Utilizes only mechanical parts
Photo credit: blog.keyeslexus.com
DESIGN ALTERNATIVE 2 Alternative 2
Differential using gears and friction plates Added weight from friction plates is
negligible over alternative 1 Friction plates can wear out
Photo credit: italiaspeed.com
DESIGN ALTERNATIVE 3
Alternative 3 Differential using gears and spring-
loaded friction plates Capable of achieving highest torque
bias ratio of all 3 alternatives More complex than all 3 alternatives Increases cost of manufacturing and
maintenance
Photo credit: torsen.info
DESIGN ALTERNATIVE 3
Photo credit: torsen.info
SURVEY OF STANDARDS
American Society of Testing and Materials Specific standards to be used depend
on material selected
American Gear Manufacturers’ Association Standards apply to gears, couplings,
and power transmission components
SURVEY OF STANDARDS
Society of Automotive Engineers Bolts and viscosity of lubricants
GLOBAL LEARNING
Design for manufacturability in various parts of the globe
Use of universal units (SI/US)
Manual in multiple languages
Cost analysis for different regions in different currencies
CONCLUSION
Design, manufacture, and assemble differential for 2016 FIU Formula SAE car
Optimize drivetrain Reduce weight Maintain current TBR
QUESTIONS