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Technical Paper

Affordance-Based Design of a Tool for Tire Data Analysis

2016-10-25
2016-36-0309
In the way of achieving maximum performance of a racecar several aspects of it have to be optimized. The whole picture of vehicle performance involves crossing data to find relationship among systems and identifying trends, pitfalls and optimum points. In this paper, a straightforward software tool for tire data analysis is developed and described. The software aims to integrate tire data analysis in early stages of the development process of a Formula SAE racecar. In addition, it is thought to be a learning environment to fresh team members. To establish and achieve the necessary goals, an affordancebased model was used to elicit user needs. Regarding the tires, it was possible to precisely point out what data is required to quickly fit a Pacejka tire mode and to cross raw tire data of different tires and preview the steady state balance of a vehicle.
Technical Paper

Formula SAE Aerodynamics: Design process with focus on drivability

2015-09-22
2015-36-0359
This paper presents the design process of an aerodynamic kit for a Formula SAE competition vehicle using CFD with special attention to the distribution of aerodynamic loads. The methodology for the development of concepts is to create a boundary that respects the geometric constraints of the vehicle and also complies with FSAE 2015/16 Rules. Inside these boundaries different geometries of aerodynamic accessories can be analyzed and several full vehicle models can be created. The initial model is conceived based on the literature and then analyzed with CFD to generate another model. The process is repeated until it reaches a model that cannot be considered optimum but is close enough to the targets previously defined. The governing equations for the numerical simulation are presented as well as the reason for their use.
Technical Paper

Analysis of a Formula SAE Vehicle Suspension: Chassis Tuning

2015-09-22
2015-36-0275
In the present paper, a typical Formula SAE double-wishbone suspension is discussed. This study aims to point out a preliminary chassis setup to reduce testing time on track and improve the overall performance of a prototype in a Formula SAE Skid Pad event. The influence of kinematic parameters of the suspension are analyzed to quantify how they change the capability of the tire to generate lateral force due to camber effects. To enhance results, special attention is given to a Magic Formula tire model based on a constrained forces and moments tire test data. Camber and Ackermann steering geometry showed up as major tuning tools to attempt during test period.
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