The results from a reduced order model based on frequency mistuning are compared with those from recently developed modified modal domain analysis (MMDA). For the academic bladed rotor considered in this paper, the frequency mistuning analysis is unable to capture the effects of geometric mistuning, whereas MMDA provides accurate estimates of natural frequencies, mode shapes, and forced response.

References

References
1.
Castanier
,
M. P.
,
Ottarsson
,
G.
, and
Pierre
,
C.
,
1997
, “
A Reduced-Order Modeling Technique for Mistuned Bladed Disks
,”
ASME J. Vib. Acoust.
,
119
(
3
), pp.
439
447
.10.1115/1.2889743
2.
Bladh
,
R.
,
Castanier
,
M. P.
, and
Pierre
,
C.
,
2001
, “
Component-Mode-Based Reduced Order Modeling Techniques for Mistuned Bladed Disks—Part I: Theoretical Models
,”
ASME J. Eng. Gas Turbines Power
,
123
(
1
), pp.
89
99
.10.1115/1.1338947
3.
Bladh
,
R.
,
Castanier
,
M. P.
, and
Pierre
,
C.
,
2001
, “
Component-Mode-Based Reduced Order Modeling Techniques for Mistuned Bladed Disks—Part II: Application
,”
ASME J. Eng. Gas Turbines Power
,
123
(
1
), pp.
100
108
.10.1115/1.1338948
4.
Yang
,
M. T.
, and
Griffin
,
J. H.
,
1997
, “
A Reduced-Order Approach for the Vibration of Mistuned Bladed Disk Assemblies
,”
ASME J. Eng. Gas Turbines Power
,
119
(
1
), pp.
161
167
.10.1115/1.2815542
5.
Yang
,
M. T.
, and
Griffin
,
J. H.
,
2001
, “
A Reduced-Order Model of Mistuning Using a Subset of Nominal System Modes
,”
ASME J. Eng. Gas Turbines Power
,
123
(
4
), pp.
893
900
.10.1115/1.1385197
6.
Yang
,
M. T.
, and
Griffin
,
J. H.
,
1997
, “
A Normalized Modal Eigenvalue Approach for Resolving Modal Interactions
,”
ASME J. Eng. Gas Turbines Power
,
119
(
3
), pp.
647
650
.10.1115/1.2817033
7.
Feiner
,
D. M.
, and
Griffin
,
J. H.
,
2002
, “
A Fundamental Model of Mistuning for a Single Family of Modes
,”
ASME J. Turbomach.
124
(
4
), pp.
597
605
.10.1115/1.1512678
8.
Sinha
,
A.
,
2009
, “
Reduced-Order Model of a Bladed Rotor With Geometric Mistuning
,”
ASME J. Turbomach.
,
131
(
3
), p.
031007
.10.1115/1.2987237
9.
Bhartiya
,
Y.
, and
Sinha
,
A.
,
2011
, “
Reduced Order Model of a Bladed Rotor With Geometric Mistuning: Comparison Between Modified Modal Domain Analysis and Frequency Mistuning Approach
,”
ASME
Paper No. GT2011-45391.10.1115/GT2011-45391
10.
MATLAB
,
2004
, MathWorks, Inc., Natick, MA.
11.
Allemang
,
R. J.
,
2003
, “
Modal Assurance Criterion—Twenty Years of Use and Abuse
,” Sound and Vibration, August, pp.
14
21
.
12.
Bhartiya
,
Y.
, and
Sinha
,
A.
,
2013
, “
Reduced Order Modeling of a Bladed Rotor With Geometric Mistuning Via Estimated Deviations in Mass and Stiffness Matrices
,”
ASME J. Eng. Gas Turbines Power
,
135
(
5
), p.
052501
.10.1115/1.4007883
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