Otimização do projeto de eixos de transmissão rotativos utilizando o conceito de projeto de experimentos e elementos finitos

Abstract

One of the mechanical components worth mentioning in machine design are the shafts. The drive shafts are used in order to transmit rotational motion and torque from one location to another in rotating machinery. In real situations the drive shafts are subject to bending stress, tensile, compression and torsion which act in isolation or combination. Because of this wide variety of types of requests is necessary that designers increasingly take into account the fatigue resistance in the design of this type of component, it is necessary to evaluate its characteristics through numerical simulations by finite element method. The combination of the finite element method along with the concepts from design of experiments can be an effective tool in the product development stage. The use of computational tools of analysis during the design lowers costs and product development time, allowing even designers to evaluate the effects of various parameters such as the change of geometry and material choice, without the need to build physical prototyping. This study aims to optimize the design of a drive shaft to maximize the number of life cycles to failure and minimize the expenditure of material for their manufacture. Such optimization is through the use of concepts from the Finite Element Method and Design of Experiments.