Title

Electric Vehicle Front Suspension

Document Type

Creative works or constructive object presentation

Campus where you would like to present

Ellensburg

Event Website

https://digitalcommons.cwu.edu/source

Start Date

18-5-2020

Abstract

The Central Washington University (CWU) Mechanical Engineering Technology (MET) program owns an electric vehicle called the "Cat-Mobile" designed to be entered into an Electrothon America race. The Cat-Mobile is a collaborative project, various aspects of which are built by CWU MET students in the capstone sequence of the senior year. For the Cat-Mobile to operate safely and effectively, it was necessary to design and build a proper front suspension system. The suspension needed to meet Electrothon America Handbook rules dictating a minimum ground clearance of 2" and optimize material usage to keep added weight at or below 20lbs. Loading and stress analysis was used to design the suspension system, and FEA anlysis assisted with optimization. The final design modeled a typical "double-wishbone" or "double A-arm" style suspension. A spindle assembly was mounted between the Aarms with the use of ball-joints. The spindles included provisions for steering, and potential mounting locations for braking components. A coil-over style shock absorber is used which can allow for height and dampening adjustments. The toal mass of parts added to the dampening adjustments. The total mass of parts added to the Cat-Mobile was just 12.7 lbs. The ground clearance of the Cat-Mobile can be adjusted and at minimum height adjustment, conforms to the Electrothon America requirement of 2".

Faculty Mentor(s)

Charles Pringle

Department/Program

Engineering, Technologies, Safety & Construction

Additional Mentoring Department

https://cwu.studentopportunitycenter.com/2020/04/electric-vehicle-front-suspension/

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May 18th, 12:00 PM

Electric Vehicle Front Suspension

Ellensburg

The Central Washington University (CWU) Mechanical Engineering Technology (MET) program owns an electric vehicle called the "Cat-Mobile" designed to be entered into an Electrothon America race. The Cat-Mobile is a collaborative project, various aspects of which are built by CWU MET students in the capstone sequence of the senior year. For the Cat-Mobile to operate safely and effectively, it was necessary to design and build a proper front suspension system. The suspension needed to meet Electrothon America Handbook rules dictating a minimum ground clearance of 2" and optimize material usage to keep added weight at or below 20lbs. Loading and stress analysis was used to design the suspension system, and FEA anlysis assisted with optimization. The final design modeled a typical "double-wishbone" or "double A-arm" style suspension. A spindle assembly was mounted between the Aarms with the use of ball-joints. The spindles included provisions for steering, and potential mounting locations for braking components. A coil-over style shock absorber is used which can allow for height and dampening adjustments. The toal mass of parts added to the dampening adjustments. The total mass of parts added to the Cat-Mobile was just 12.7 lbs. The ground clearance of the Cat-Mobile can be adjusted and at minimum height adjustment, conforms to the Electrothon America requirement of 2".

https://digitalcommons.cwu.edu/source/2020/CEPS/27