Utilização da metodologia ashby no projeto UFPBaja para a seleção de materiais

Abstract

Due to the exorbitant number of materials available to engineers, the use of a deep and rigorous methodology in conjunction with a computational tool to select them is crucial because in addition to ensuring the reliability of the project, it guarantees greater quality and flexibility during the choice process. In this way, this work is based on the use of the Ashby methodology through the use of the Ces Edupack software as an alternative material selection mechanism that meets and satisfies the design needs in a competitive vehicle "BAJA SAE" developed by students of the courses of engineering at the Technology Center of the Federal University of Paraíba. The adopted method of applied selection is known as Ashby Methodology, developed by Michael Farries Ashby, which consists of the development of a systematic and scientific procedure to select materials and manufacturing processes, resulting in a subset that best meets the requirements of a project. Currently, the team employs the selection of materials in the traditional way, characterized by being a more superficial choice, comparing information on materials and processes already known, values listed in books and the dependence from old experiences. Then, to demonstrate the Ashby methodology through the software, the selection of materials for the brake disc, suspension arm and floor components was carried out with the focus on reducing mass. For this, information was generated through material property diagrams that group material families with the respective Performance Index. Thus, the research selected for the manufacture of a lighter brake disc the gray cast iron, for a lighter suspension arm the metallic matrix composites and for a lighter floor the carbon fiber reinforced polymer (CFRP) in epoxy matrix.