Elastic-plastic design of a rotating shrink fit with functionally graded hub


Apatay T., Arslan E., Mack W.

ARCHIVE OF APPLIED MECHANICS, vol.87, no.11, pp.1829-1843, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 87 Issue: 11
  • Publication Date: 2017
  • Doi Number: 10.1007/s00419-017-1290-5
  • Title of Journal : ARCHIVE OF APPLIED MECHANICS
  • Page Numbers: pp.1829-1843
  • Keywords: Interference fit, Solid inclusion, Functionally graded material, Rotation, Elastoplasticity, TEMPERATURE CYCLE, SOLID INCLUSION, ELASTOPLASTIC ANALYSIS, STRESS-DISTRIBUTION, VARIABLE THICKNESS, PRESSURE-VESSELS, SHAFT, JOINTS, DISKS, DEFORMATION

Abstract

For given geometry of a shrink fit, a further essential design parameter is the interface pressure between inclusion and hub to reliably transfer a moment under all operating conditions in the specific application. Hence, in general a large interface pressure shall be achieved, and this may be facilitated by an elastic-plastic design. Furthermore, minimizing the weight of the device becomes increasingly important in engineering, too. To achieve both objectives, in the present semi-analytical study of a shrink fit with solid inclusion a combined elastic-plastic design and use of a functionally graded hub is proposed. As is shown, by appropriate grading not only the weight of the hub can be reduced noticeably as compared to a homogeneous one but also a much better behavior at rotation can be achieved, and admitting partial plasticization can further improve the performance; as an example, a shrink fit with steel/aluminum FGM-hub is discussed comprehensively.