Projeto de novo spider para freios a tambor

Abstract

Since human beings were able to evolve to the point of creating vehicles for transport, they have been concerned (naturally) with maintaining control over them, from the carriages that had treis brakes controlled by the horse's ears to today with the most sophisticaded control systems speed (brakes). This work is based on the development of a new brake component, the spider. The spider is a structural componente used only in drum brakes. The objective of this work is to obtain a weell-structured product with as little mass as possible so that the brake meets legal requirements. The work methodology presents calculations for loadspecification, FEA study and the use of topological optimization. The design will be created based on topological optimization and validation by FEA based on the approval criteria obtained in the chucker test. As a market strategy, we chose to allocate cast steel product, since new entrants to the market (imported products) have followed this trend. From the topological optimizations, four designs were extracted which, after several evaluations, were rejected due to insuficiente mechanical characteristics (high stress levels), the third due to process (walls below the minimum thickness for casting) and the fourth due to the cost target that had already been exceeded due to the increase in the product?s walls for manufacturing. [resumo fornecido pelo autor]