Determinação das localizações de dois elementos mecânicos montados sobre um eixo de transmissão de potência de forma a maximizar a frequência natural de vibração do sistema

Abstract

This work presents the application of the modal analysis theory inherent the study of mechanical vibrations, to maximize the fundamental frequency of vibration of the design of a power transmission shaft. It is considered a mechanical power transmission system, with a gear and a flywheel element assembled on the shaft. The Rayleigh method was implemented in order to obtain a estimate of the first natural frequency of vibration, with de purpose of obtaining the positions of each element and determining the maximum resonance frequency for the projected system. Another way to obtain natural frequency preferred by the design engineer, however, this requires time and computational cost, went through design and simulation using the Finite Element Method (FEM). In this work, Computer-Aided Design (CAD) software and Computer-Aided Engineering (CAE) software were used to perform the modeling and simulation, respectively, in order to compare the result with the value obtained analytically by the proposed method.