Resumen de On the design of rotating elastic shrink fits with annular inclusion and functionally graded hub
Tunc Apatay, Eray Arslan, Werner Mack
Shrink fits are found frequently in mechanical engineering as an efficient means of connecting a cylindrical inclusion with an annular hub. For reliable operation, the interface pressure between the components should be as large as possible. Although in some cases this may be achieved by a partially plastic design, there are many applications where the device should behave elastically. In the present study, the use of a functionally graded material for the hub is proposed, and particularly an annular inclusion is considered. It is shown that – depending on the radii ratios and the degree of grading – qualitatively different types of mechanical behavior are possible, and that in general by appropriate grading a much better performance at rotation can be achieved, accompanied by a substantial saving of weight. These issues are discussed in detail, and the analytically obtained results provide a comprehensive means for the practicing engineer to decide whether this type of shrink fit might be advantageous for some applications.
