A procedure for calculating contact loads on a dovetail surface for given engine performance parameters such as speed and temperature is described. The procedure requires a small number of predetermined calibrating finite element analyses to obtain empirical constants. Verification is provided by detailed finite element analyses. Contact loads can be calculated for an entire mission history in near real-time. The contact load histories could be used to calculate local stress necessary for fatigue life prediction.

Issue Section:
Research Papers
Keywords:
engines, fatigue, finite element analysis
Topics:
Stress, Blades, Engines
1.
Ruiz
,
C.
,
Boddington
,
P. H. B.
, and
Chen
,
K. C.
, 1984, “
Investigation of Fatigue and Fretting in a Dovetail Joint
,”
Exp. Mech.
0014-4851,
24
(
3
), pp.
208
–
217
.
Crossref
Search ADS
 
2.
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
0742-4795,
124
, pp.
182
–
189
.
Crossref
Search ADS
 
3.
Murthy
,
H.
,
Harish
,
G.
, and
Farris
,
T. N.
, 2004, “
Efficient Modeling of Fretting of Blade/Disk Contacts Including Load History Effects
,”
ASME J. Tribol.
0742-4787,
126
, pp.
56
–
64
.
Crossref
Search ADS
 
4.
Golden
,
P. J.
, and
Grandt
,
A. F.
, Jr., 2004, “
Fracture Mechanics Based Fretting Fatigue Life Predictions of Ti-6Al-4V
,”
Eng. Fract. Mech.
0013-7944,
71
, pp.
2229
–
2243
.
Crossref
Search ADS
 
5.
Sinclair
,
G. B.
, and
Cormier
,
N. G.
, 2002, “
Contact Stresses in Dovetail Attachments: Physical Modeling
,”
ASME J. Eng. Gas Turbines Power
0742-4795,
124
, pp.
325
–
331
.
Crossref
Search ADS
 
6.
Hills
,
D. A.
, and
Nowell
,
D.
, 1994, “
Mechanics of Fretting Fatigue
,”
Solid Mechanics and Its Applications
, Vol.
30
,
Kluwer Academic
,
The Netherlands
.
7.
Gean
,
M. C.
, 2004, “
Finite Element Analysis of the Mechanics of Blade Disk Contact
,” MS thesis, Purdue University.
8.
Gean
,
M. C.
, and
Farris
,
T. N.
, 2005, “
Finite Element Analysis of the Mechanics of Blade/Disk Contact
,”
Proceedings of the 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
, Austin, TX, Paper No. AIAA2005-1907.
Copyright © 2011
 by American Society of Mechanical Engineers
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