Metodologia para análise térmica de um freio de Fórmula SAE
Resumo
The brake design for a Formula SAE high-performance prototype involves the
mechanical-structural and thermal development of the system components, especially
the brake disc, to ensure superior performance, reliability and safety for the vehicle
and the driver. Usually, teams from student competitions such as Formula SAE and
Mini-Baja have wide access to the theory and different methodologies of mechanical
design of the brakes. However, the information and theoretical tools for the study and
thermal analysis of the braking system are, in addition to being more complex, more
difficult to access, leading this design facet not conducted. Thus, the present study
aimed to present a methodology that can be replicated in student prototype brake
projects, to provide student designers with information for the thermal analysis of the
vehicle brake, with success and failure criteria for the analyzed project. To this end, a
theoretical literature review was conducted to assist in the thermal modeling and in the
elaboration of the proposed project methodology. The OptimumLap software was used
to simulate the prototype laps in a circuit, and the MATLAB and NX-Nastran were
applicated in dynamic simulations that comprise the thermal analysis of the project. At
the end of the paper, it was possible to define the design criteria, demonstrate the use
of OptimumLap as a tool to obtain input data, and use the modeling of the MATLAB
and NX-Nastran to generate the transient output data that allow the analysis and
validation of the project. It was concluded, therefore, that the proposed methodology
is sufficient to carry out a complete thermal analysis of the brakes of a Formula SAE.
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