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Load History Effects on Fretting Contacts of Isotropic Materials

[+] Author Affiliations
P. T. Rajeev

GE Superabrasives, Worthington, OH

H. Murthy, T. N. Farris

Purdue University, West Lafayette, IN

Paper No. GT2002-30297, pp. 643-649; 7 pages
doi:10.1115/GT2002-30297
From:
  • ASME Turbo Expo 2002: Power for Land, Sea, and Air
  • Volume 4: Turbo Expo 2002, Parts A and B
  • Amsterdam, The Netherlands, June 3–6, 2002
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-3609-6 | eISBN: 0-7918-3601-0
  • Copyright © 2002 by ASME

abstract

The load history that blade/disk contacts in jet engine attachment hardware are subject to can be very complex. Using Finite Element Method (FEM) to track changes in the contact tractions due to changing loads can be computationally very expensive. For 2D plane strain contact problems with friction involving similar/dissimilar isotropic materials, the contact tractions can be related to the initial gap function and the slip function using coupled Cauchy Singular Integral Equations (SIEs). The effect of load history on the contact tractions is illustrated by presenting results for an example fretting “mission”. For the case of dissimilar isotropic materials the misson results show the effect of the coupling between the shear traction and the contact pressure.

Copyright © 2002 by ASME
Topics: Stress

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