The stress analysis of dovetail attachments presents some challenges. These stem from the high stress gradients present, the contact inequalities attending conforming contact, and the nonlinearities inherent in Coulomb friction laws. Obtaining converged contact stresses in the presence of these phenomena is demanding, especially in three dimensions. In Beisheim and Sinclair (2003, ASME J. Turbomach., 125, pp. 372–379), a submodeling approach with finite elements is employed to meet these challenges when friction is not present. Here we extend this approach to treat contact when friction is present. Converged stresses are obtained by using two successive submodels. Comparing these stresses with two-dimensional analysis elucidates some of the truly three-dimensional aspects of the stress analysis of dovetail attachments. Further comparisons of contact stresses when crowning is added indicate the possible alleviation of fretting fatigue that may be afforded by this means.
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April 2008
Research Papers
Three-Dimensional Finite Element Analysis of Dovetail Attachments With and Without Crowning
J. R. Beisheim,
J. R. Beisheim
Development Group,
ANSYS, Inc.
, Canonsburg, PA 15317
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G. B. Sinclair
G. B. Sinclair
Department of Mechanical Engineering,
Louisiana State University
, Baton Rouge, LA 70803
Search for other works by this author on:
J. R. Beisheim
Development Group,
ANSYS, Inc.
, Canonsburg, PA 15317
G. B. Sinclair
Department of Mechanical Engineering,
Louisiana State University
, Baton Rouge, LA 70803J. Turbomach. Apr 2008, 130(2): 021012 (8 pages)
Published Online: March 21, 2008
Article history
Received:
August 10, 2006
Revised:
September 5, 2006
Published:
March 21, 2008
Citation
Beisheim, J. R., and Sinclair, G. B. (March 21, 2008). "Three-Dimensional Finite Element Analysis of Dovetail Attachments With and Without Crowning." ASME. J. Turbomach. April 2008; 130(2): 021012. https://doi.org/10.1115/1.2751486
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