This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Design of Formula SAE Half Shafts for Optimum Vehicle Acceleration
Technical Paper
2013-01-1772
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Many Formula SAE teams choose to design half shafts instead of purchase them. Commercial half shafts are usually over-designed, so teams make custom shafts to reduce the mass and rotational inertia. Half shafts are commonly designed by predicting the applied torsional loads and selecting inner and outer diameters to not exceed the material's yield strength. Various combinations of inner and outer diameters will support the loads, and the final dimensions may be chosen arbitrarily based on the designer's attempt to minimize both mass and rotational inertia. However, the mass and rotational inertia of a hollow shaft are inversely related and both quantities cannot be minimized simultaneously. Designers must therefore compromise between mass and rotational inertia reductions to maximize vehicle performance.
This paper will present the derivation of an equation which calculates the optimum inner and outer half shaft diameter to maximize vehicle acceleration. Graphical explanations and predictions of vehicle acceleration improvements will be provided. The design, manufacturing, and testing procedure of Cal Poly Pomona's Formula SAE half shafts will be explained as an example for other teams.
Recommended Content
Technical Paper | Vehicle Acceleration Modeling in PC-Crash |
Technical Paper | Overview of Emerging Technology for Laboratory Based Measurement of Vehicle Performance Parameters |
Technical Paper | Determinants of Multiple Measures of Acceleration |
Citation
Parsons, J., "The Design of Formula SAE Half Shafts for Optimum Vehicle Acceleration," SAE Technical Paper 2013-01-1772, 2013, https://doi.org/10.4271/2013-01-1772.Also In
References
- Budynas , Richard , and Nisbett Keith Shigley's Mechanical Engineering Design New York McGraw-Hill 2011
- WEAVER , M. Determination of Weld Loads and Throat Welding Journal 1999 1 11 http://www.aws.org/wj/supplement/Weaver/ARTICLE2.pdf October 24 2012
- Meriam , J. , and Kraige L. Engineering Mechanics Dynamics Hoboken John Wiley & Sons, Inc. 2010
- Rajamani , Rajesh Vehicle Dynamics and Control New York Springer 2006