Sistema computacional de otimização para um mecanismo de frenagem à tambor de sapatas internas longas e de sapatas externas curtas

Abstract

The process of dimensioning and optimization of mechanical systems are crucial and extensive design’s steps, therefore, are quite susceptible to mistakes. Aiming at design celerity and decreasing the occurrence of said mistakes, this work will detail the development of an automated Excel worksheet, using the code language VBA, which has as objective the optimization of some drum brake system’s parameters. Among the several possible setups that a drum brake system can assume, two specific cases will be reached by the developed program; one for long inner shoe brakes and other for short outer shoe brakes, both with pre established setups. For the first system, the variable which will be optimized is the “shoe brake width”, for the second one, will be the “distance between the articulation point and the force’s action line”. The developed code will be applied to adapted problems extracted from common bibliographies in order to exemplify the functioning of the program and validate the success of this work.