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 two-dimensional 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 mission results show the effect of the coupling between the shear traction and the contact pressure.

Issue Section:
Gas Turbines: Structures and Dynamics
Keywords:
finite element analysis, jet engines, traction, wear, Fourier transforms, slip
Topics:
Stress, Traction, Shear (Mechanics), Integral equations, Jet engines
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Copyright © 2004
 by ASME
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