Diseño de una junta empernada trabajando a fatiga.

Abstract

This project presents the design of a bolted joint working under fatigue with an adequate load distribution because the greater load is absorbed by the parts while the bolt absorbs less load, this design is optimal for the correct functioning of the bolted joint and increase in its useful life. The project started with a bibliographic compilation about machine elements, machine design and main characteristics of bolted joints. Continuing with a general analysis of bolted joints, obtaining the respective technical specifications, the same that through a synthesis and under design criteria it was possible to obtain different preliminary designs of bolted joints, each with a small change in its geometry and type of material. Subsequently, the materialization design of each bolted joint was carried out, which through an analysis found the mathematical model to be applied in each design. Once the equations of each bolted joint were obtained, values close to reality were assumed for the respective calculation of the different design parameters of the same, mainly the safety factor and the distribution constant. Finally, the values of each bolted joint were evaluated and through a comparison it was possible to identify the best design with a high safety factor and low distribution constant, which indicates that the greatest load goes to the parts and the bolt is lighter, guaranteeing greater useful life of this machine element.