One of the common failure modes of the diesel-engine turbochargers is the high-cycle fatigue (HCF) of the turbine-wheel blades. Mistuning of the blades due to the casting process is believed to contribute to this failure mode. Currently available commercial finite-element software requires high computational capacity to model statistical mistuning. The objective is to develop a simple model tailored for the evaluation of statistical mistuning in diesel-engine turbocharger turbine wheels that can be used in the product design stage. This research focuses on the radial turbine-wheel design that is typically used in 6–12 L diesel-engine applications. A continuous twisted-blade model is developed in matlab using finite element techniques. The model is tested and validated against different symmetrical cases as well as abaqus results.

Issue Section:
Internal Combustion Engines
Keywords:
Finite element, Finite element methods, Turbines
Topics:
Blades, Turbines, Wheels, Finite element analysis

References

1.
Ewins
,
D.
,
1966
, “
The Effects of Detuning Upon the Vibration of Bladed Discs
,”
Ph.D. thesis
, University of Cambridge, Cambridge, UK.
2.
Whitehead
,
D. S.
,
1976
, “
Effect of Mistuning on Forced Vibration of Blades With Mechanical Coupling
,”
J. Mech. Eng. Sci.
,
18
(
6
), pp.
306
–
307
.
Google Scholar
Crossref
Search ADS
 
3.
Ewins
,
D. J.
,
1969
, “
The Effects of Detuning Upon the Forced Vibrations of Bladed Disks
,”
J. Vib. Sound Eng.
,
9
(
1
), pp.
65
–
79
.
Google Scholar
Crossref
Search ADS
 
4.
Hemberger
,
D.
,
Filsinger
,
D.
, and
Bauer
,
H.-J.
,
2013
, “
Mistuning Modeling and Its Validation for Small Turbine Wheels
,”
ASME
Paper No. GT2013-94019.
5.
Hönisch
,
P.
,
Kühhorn
,
A.
, and
Beirow
,
B.
,
2011
, “
Experimental and Numerical Analyses of Radial Turbine Blisks With Regard to Mistuning
,”
ASME
Paper No. GT2011-45359.
6.
Giersch
,
T.
,
Hönisch
,
P.
,
Beirow
,
B.
, and
Kühhorn
,
A.
,
2013
, “
Forced Response Analyses of Mistuned Radial Inflow Turbines
,”
ASME J. Turbomach.
,
135
(
3
),
p
. 031034.
Google Scholar
Crossref
Search ADS
 
7.
Maywald
,
T.
,
Beirow
,
B.
, and
Kühhorn
,
A.
,
2015
, “
Mistuning and Damping of Turbine Impellers
,”
ATZ
,
76
(6), pp. 40–46.
8.
Carnegie
,
W.
,
1957
, “
Static Bending of Pre-Twisted Cantilever Blading
,”
Proc. Inst. Mech. Eng.
,
171
(
32
), p.
873
.
Google Scholar
Crossref
Search ADS
 
9.
Przemieniecki
,
J. S.
,
1985
,
Theory of Matrix Structural Analysis
,
Dover Publications
, New York.
10.
Goldstein
,
H.
,
Poole
,
C.
, and
Safko
,
J.
,
2000
,
Classical Mechanics
, 3rd ed.,
Addison Wesley
, New York.
11.
Ottosen
,
N. S.
, and
Petersson
,
H.
,
1992
,
Introduction to the Finite Element Method
,
Prentice-Hall
, New York.
12.
Majkut
,
L.
,
2009
, “
Free and Forced Vibrations of Timoschenko Beams Described by Single Difference Equation
,”
J. Theor. Appl. Mech.
,
1
(
47
), pp.
193
–
210
.
13.
Carnegie
,
W.
,
1959
, “
Vibrations of Pre-Twisted Cantilever Blading
,”
Proc. Inst. Mech. Eng.
,
173
(
1
), pp. 343–374.
14.
Mabie
,
H. H.
, and
Rogers
,
C. B.
,
1968
, “
Transverse Vibrations of Tapered Cantilever Beams With End Support
,”
J. Acoust. Soc. Am.
,
44
(
6
), pp.
1739
–
1741
.
Google Scholar
Crossref
Search ADS
 
Copyright © 2017 by ASME
You do not currently have access to this content.