Método da evolução diferenciada para a otimização do cálculo do alinhamento de eixos propulsores

Abstract

In this work, an alignment methodology is presented in detail, which consisted in the use of finite element method in the modeling of a shaft line and in the development of an algorithm used to optimize the propeller shafts alignment calculation, using the Differential Evolution optimization method, developed by STORN and PRICE (1997). For the calculation optimization, the alignment criteria established by SNAME (The Society of Naval Architects and Marine Engineers) were used, where these criteria were inserted in the development of the algorithm. Four examples of application of the algorithm were demonstrated in the bearings displacements determination in order to obtain an adequate alignment. An analysis of the final alignment condition of each example was performed. Alignment calculations for these shaft lines were successfully performed and met the criteria established by SNAME. The work showed that the application of the algorithm was efficient in alignment optimizing of propeller shafts.