Desenvolvimento de código em Linguagem C++ para modelamento do comportamento termodinâmico de pneu utilizando o método dos elementos finitos

Abstract

The tire behavior analysis is essential on the performance evaluation of an automobile, since it has a major contribution on the dynamic behavior of the vehicle. Many models now used are limited in number of supported analysis, for instance the model that represents the tire as a spring is basically restricted to modal analysis. The analysis using the finite element method can perform static, dynamic and frequency analysis, and it is also capable of representing constructive characteristics like the tire’s metallic fibers inclination, which varies depending on the tire goal. Therefore, a robust and accurate model is proposed. Aiming to increase the accuracy of the model currently in use, one application for thermodynamic tire modeling was developed using C++ language. Therefore, it was necessary to develop a code that uses the mesh generated by the structural mechanical model, adapting it for the thermal analysis through intermediate hexahedral elements layers addition, such that the interchangeability with the original mesh is preserved. Finally, it is possible to couple the thermodynamic and structural mechanical models, making the model more robust and accurate.