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TECHNICAL PAPERS

On the Three-Dimensional Finite Element Analysis of Dovetail Attachments

[+] Author and Article Information
J. R. Beisheim

Development Group, ANSYS, Inc., Canonsburg, PA

G. B. Sinclair

Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803

J. Turbomach 125(2), 372-379 (Apr 23, 2003) (8 pages) doi:10.1115/1.1539867 History: Received October 10, 2001; Online April 23, 2003
Copyright © 2003 by ASME
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References

Boddington,  P. H. B., Chen,  K., and Ruiz,  C., 1985, “The Numerical Analysis of Dovetail Joints,” Comput. Struct., 20, pp. 731–735.
ANSYS personnel, 1998, ANSYS Advanced Analysis Techniques, Revision 5.5, ANSYS Inc., Canonsburg, PA.
Kenny,  B., Patterson,  E. A., Said,  M., and Aradhya,  K. S. S., 1991, “Contact Stress Distributions in a Turbine Disk Dovetail Type Joint—A Comparison of Photoelastic and Finite Element Results,” Strain 27 , pp. 21–24.
Papanikos,  P., and Meguid,  S. A., 1994, “Theoretical and Experimental Studies of Fretting-Initiated Fatigue Failure of Aeroengine Compressor Discs,” Fatigue Fract. Eng. Mater. Struct., 17, pp. 539–550.
Meguid,  S. A., Refaat,  M. H., and Papanikos,  P., 1996, “Theoretical and Experimental Studies of Structural Integrity of Dovetail Joints in Aeroengine Discs,” J. Mater. Process. Technol., 56, pp. 668–677.
Sinclair,  G. B., Cormier,  N. G., Griffin,  J. H., and Meda,  G., 2002, “Contact Stresses in Dovetail Attachments: Finite Element Modeling,” ASME J. Eng. Gas Turbines Power, 124, pp. 182–189.
Papanikos,  P., Meguid,  S. A., and Stjepanovic,  Z., 1998, “Three-Dimensional Nonlinear Finite Element Analysis of Dovetail Joints in Aeroengine Discs,” Finite Elem. Anal. Design, 29, pp. 173–186.
Sinclair, G. B., 1998, “FEA of Singular Elasticity Problems,” Proc., Eighth International ANSYS Conference, Pittsburgh, PA, 1 , pp. 225–236.
Cormier,  N. G., Smallwood,  B. S., Sinclair,  G. B., and Meda,  G., 1999, “Aggressive Submodelling of Stress Concentrations,” Int. J. Numer. Methods Eng., 46, pp. 889–909.
Strang, W. G., and Fix, G. J., 1973, An Analysis of the Finite Element Method, Prentice-Hall, Inc., Englewood Cliffs, NJ.
Sinclair, G. B., Beisheim, J. R., Epps, B. P., and Pollice, S. L., 2000, “Towards Improved Submodeling of Stress Concentrations,” Proc., Ninth International ANSYS Conference, Pittsburgh, PA, CD-ROM.
Sinclair,  G. B., and Epps,  B. P., 2002, “On the Logarithmic Stress Singularities Induced by the Use of Displacement Shape Functions in Boundary Conditions in Submodelling,” Commun. Numer. Methods. Eng., 18, pp. 121–130.
Beisheim, J. R., and Sinclair, G. B., 2001, “Improved Control of Boundary Condition Error in Submodeling,” Report SM 1.01, Dept. of Mechanical Engineering, Louisiana State University, Baton Rouge, LA.
Press, W. H., Teukolsky, S. A., Vetterling, W. T., and Flannery, B. P., 1992, Numerical Recipes in C, Cambridge University Press, New York, NY.
Ransom,  J. B., and Knight,  N. F., 1990, “Global/Local Stress Analysis of Composite Panels,” Comput. Struct., 37, pp. 375–395.
Sinclair, G. B., 2000, “Logarithmic Stress Singularities in Two-Dimensional and Three-Dimensional Elasticity,” Proc., Twentieth Southeastern Conference of Theoretical and Applied Mechanics, Callaway Gardens, GA, pp. SM94.1–8.
Aksentian,  O. K., 1967, “Singularities of the Stress-Strain State of a Plate in the Neighborhood of an Edge,” J. Applied Mathematics,37, pp. 193–202.
Brothers, P. W., 1976, “The Rigid Rectangular Punch on the Elastic Half-Space,” Master’s thesis, University of Auckland, Auckland, New Zealand.

Figures

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Dovetail blade attachment from a gas turbine engine: (a) global grid, (b) close-up of contact region in global grid, (c) submodel grid
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Dovetail attachment test piece
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Finite element grids for dovetail attachment test piece: (a) global coarse grid, (b) submodel coarse grid, (c) outer restraining ring coarse grid
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Normalized contact stress results: (a) blade segment with lines along which stresses are taken, (b) contact stresses straight across the blade (r1), (c) contact stresses down the blade (r2), (d) contact stresses diagonally across the blade (r3)
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Representative region for interpolation with bicubic surface

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