This thesis presents the complete and analysed design of the space frame chassis to be built for the 2102 UQ Formula SAE-A competition. The scope of this paper extends to the final drawings of the chassis only; fabrication will commence following the 2011 competition in December.
The Formula SAE-A competition is an annual event organised and hosted by the Society of Automotive Engineers Australasia (SAE-A); the Australasian arm of an international competition held around the globe. The competition enables students to act as a race team and encourages them to deal with all aspects of motorsport, including the design of the vehicle. This chassis is being designed in conjunction with a new suspension, steering and braking system for the University of Queensland’s FSAE team, UQR2011.
The final chassis design, dubbed ‚UQR12‛, is torsionally stiff, adjustable, ergonomically correct and structurally sound; a considerable improvement on the team’s 2011 chassis. In order to achieve this, the design process was highly iterative and the chassis was subject to extensive physical and theoretical testing. Physical testing was completed through the construction of a full scale wooden mock up, and theoretically through the creation of a realistic Finite Element Analysis model. This theoretical analysis tested all three possible load cases; acceleration, braking and cornering, as well as the torsional stiffness of the chassis. Test results were extremely positive with a theoretical torsional stiffness of 2146 Nm/degree achieved. This result is more than double the stiffness of previous designs, implying especially enhanced performance.