Higher aircraft energy efficiency may be achieved by minimizing the clearance between the rotating blade tips and respective surrounding casing. A common technical solution consists in the implementation of an abradable liner which improves both the operational safety and the efficiency of modern turbomachines. However, unexpected abradable wear removal mechanisms were recently observed in experimental set-ups as well as during maintenance procedures. Based on a numerical strategy previously developed, the present study introduces a numerical-experimental comparison of such occurrence. Attention is first paid to the review and analysis of existing experimental results. Good agreement with numerical predictions is then illustrated in terms of critical stress levels within the blade as well as final wear profiles of the abradable liner. Numerical results suggest an alteration of the abradable mechanical properties in order to explain the outbreak of a divergent interaction. New blade designs are also explored in this respect and it is found that the interaction phenomenon is highly sensitive to (1) the blade geometry, (2) the abradable material properties, and (3) the distortion of the casing.

References

References
1.
Morfey
,
C. L.
, 1964, “
Rotating Pressure Patterns in Ducts: Their Generation and Transmission
,”
J. Sound Vib.
,
1
(
1
), pp.
60
87
.
2.
Arndt
,
N.
,
Acosta
,
A. J.
,
Brennen
,
C. E.
, and
Caughey
,
T. K.
, 1990, “
Experimental Investigation of Rotor-Stator Interaction in a Centrifugal Pump With Several Vaned Diffusers
,”
J. Turbomach.
,
112
, pp.
98
108
.
3.
Dring
,
R. P.
,
Joslyn
,
H. D.
,
Hardin
,
L. W.
, and
Wagner
,
J. H.
, 1982, “
Turbine Rotor-Stator Interaction
,”
J. Eng. Power
,
104
, pp.
729
742
.
4.
Trébinjac
,
I.
, and
Vixège
,
C.
, 2002, “
Experimental Analysis of the Rotor Stator Interaction Within a High Pressure Centrifugal Compressor
,”
J. Therm. Sci.
,
11
, pp.
1
9
.
5.
Millecamps
,
A.
,
Brunel
,
J. F.
,
Dufrénoy
,
P.
,
Garcin
,
F.
, and
Nucci
,
M.
, 2009, “
Influence of Thermal Effects During Blade-Casing Contact Experiments
,”
ASME
Paper No. DETC2009-86842.
6.
Park
,
M.
,
Hwang
,
Y.-H.
,
Choi
,
Y.-S.
, and
Kim
,
T.-G.
, 2002, “
Analysis of a J69-T-25 Engine Turbine Blade Fracture
,”
Eng. Failure Anal.
,
9
, pp.
593
601
.
7.
Xie
,
Y.-J.
,
Wang
,
M.-C.
,
Zhang
,
G.
, and
Chang
,
M.
, 2006, “
Analysis of Superalloy Turbine Blade Tip Cracking During Service
,”
Eng. Failure Anal.
,
13
, pp.
1429
1436
.
8.
Schmiechen
,
P.
, 1997, “
Travelling Wave Speed Coincidence
,” Ph.D. thesis, College of Science, Technology and Medicine, London, UK.
9.
Legrand
,
M.
,
Pierre
,
C.
,
Cartraud
,
P.
, and
Lombard
,
J.-P.
, 2009, “
Two-Dimensional Modeling of an Aircraft Engine Structural Bladed Disk-Casing Modal Interaction
,”
J. Sound Vib.
,
319
(
1-2
), pp.
366
391
.
10.
Batailly
,
A.
,
Legrand
,
M.
,
Cartraud
,
P.
, and
Pierre
,
C.
, 2010, “
Assessment of Reduced Models for the Detection of Modal Interaction Through Rotor Stator Contacts
,”
J. Sound Vib.
,
329
, pp.
5546
5562
.
11.
Emery
,
A. F.
,
Wolak
,
J.
,
Etemad
,
S.
, and
Choi
,
S. R.
, 1983, “
An Experimental Investigation of Temperatures Due to Rubbing at the Blade-Seal Interface in an Aircraft Compressor
,”
Wear
,
91
, pp.
117
130
.
12.
Padova
,
C.
,
Barton
,
J.
,
Dunn
,
M.
, and
Manwaring
,
S.
, 2007, “
Experimental Results From Controlled Blade Tip/Shroud Rubs at Engine Speed
,”
J. Turbomach.
,
129
(
4
), pp.
713
723
.
13.
Muszynska
,
A.
, 1986, “
Whirl and Whip-Rotor/Bearing Stability Problems
,”
J. Sound Vib.
,
110
(
3
), pp.
443
462
.
14.
Childs
,
D. W.
, and
Bhattacharya
,
A.
, 2007, “
Prediction of Dry-Friction Whirl and Whip Between a Rotor and a Stator
,”
J. Vib. Acoust.
,
129
, pp.
355
362
.
15.
Williams
,
R. J.
, 2011, “
Simulation of Blade Casing Interaction Phenomena in Gas Turbines Resulting From Heavy Tip Rubs Using an Implicit Time Marching Method
,”
ASME
Paper No. GT2011-45495.
16.
Ma
,
X.
, and
Matthews
,
A.
, 2009, “
Evaluation of Abradable Seal Coating Mechanical Properties
,”
Wear
,
267
, pp.
1501
1510
.
17.
Yi
,
M. J. H.
,
Huang
,
B.
, and
Zhou
,
H.
, 1999, “
Friction and Wear Behaviour and Abradability of Abradable Seal Coating
,”
Wear
,
231
, pp.
47
53
.
18.
Bounazef
,
M.
,
Guessasma
,
S.
, and
Ait-Saadi
,
B.
, 2004, “
The Wear, Deterioration and Transformation Phenomena of Abradable Coating BN-SiAl-Bounding Organic Element, Caused by the Friction Between the Blades and the Turbine Casing
,”
Mater. Lett.
,
58
, pp.
3375
3380
.
19.
Peyraut
,
F.
,
Seichepine
,
J. L.
,
Coddet
,
C.
, and
Hertter
,
M.
, 2008, “
Finite Element Modeling of Abradable Materials—Identification of Plastic Parameters and Issues on Minimum Hardness Against Coating’s Thickness
,”
Int. J. Simul. Multidiscip. Des. Optim.
,
2
, pp.
209
215
.
20.
Legrand
,
M.
,
Batailly
,
A.
, and
Pierre
,
C.
, 2012, “
Numerical Investigation of Abradable Coating Removal Through Plastic Constitutive Law in Aircraft Engine
,”
J. Comput. Nonlinear Dyn.
,
7
, p.
011010
.
21.
Batailly
,
A.
,
Legrand
,
M.
, and
Pierre
,
C.
, 2011, “
Influence of Abradable Coating Wear Mechanical Properties on Rotor Stator Interaction
,”
ASME
Paper No. GT2011-45189.
22.
Craig
,
R. R.
, and
Bampton
,
C. C.
, 1968, “
Coupling of Substructures for Dynamics Analyses
,”
AIAA J.
,
6
(
7
), pp.
1313
1319
.
23.
Batailly
,
A.
,
Legrand
,
M.
,
Cartraud
,
P.
,
Pierre
,
C.
, and
Lombard
,
J. P.
, 2007, “
Study of Component Mode Synthesis Methods in a Rotor-Stator Interaction Case
,”
Proceedings of the ASME 2007 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference: IDETC07
, September 2007, Las Vegas, NV.
24.
Batailly
,
A.
, 2008, “
Simulation De L’interaction Rotor/Stator pour des Turbomachines Aéronautiques en Configuration Non-Accidentelle
,” Ph.D. thesis, École Centrale de Nantes, Nantes, France, http://tel.archives-ouvertes.fr/tel-00364945/en/.
25.
Sternchüss
,
A.
, and
Balmès
,
E.
, 2006, “
On the Reduction of Quasi-Cyclic Disks With Variable Rotation Speeds
,”
Proceedings of the International Conference on Advanced Acoustics and Vibration Engineering (ISMA)
, pp.
3925
3939
.
26.
Chakravorty
,
P. K.
,
Bhujanga Rao
,
V.
,
Murthy
,
K. V. V. S. S.
, and
Unnikrishnan
,
T.
, 1981, “
Vibration Signature Analysis of Ship Board Machinery
,”
Def. Sci. J.
,
32
(
1
), pp.
9
16
.
You do not currently have access to this content.