Transient Stress Analysis and Fatigue Life Estimation of Turbine Blades-Reference-Cited by-同舟云学术

Transient Stress Analysis and Fatigue Life Estimation of Turbine Blades

Published:2004-10-01 Issue:4 Volume:126 Page:485-495
ISSN:1048-9002
Container-title:Journal of Vibration and Acoustics
language:en
Short-container-title:

Author:

Dhar Deepak¹,Sharan A. M.¹,Rao J. S.²

Affiliation:

1. Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada

2. Dept. of Mechanical Engineering, I.I.T. Delhi, Hauz Khas, New Delhi, India

Abstract

This paper is concerned with life estimation of a turbine blade taking into account the combined effects of centrifugal stresses, vibratory stresses and thermal stresses. The stresses are determined by accounting for the rotor acceleration. The blades are subjected to aerodynamic excitation force obtained from thin cambered aerofoil theory under incompressible flow. The thermo-elastic forces are obtained from the three-dimensional non-linear heat transfer equations using the finite element analysis. The fatigue life is estimated using two well known theories, from the number of cycles in various blocks during start-up and shut-down periods of the turbine operation when the stresses peak.

Publisher

ASME International

Subject

General Engineering

Link

http://asmedigitalcollection.asme.org/vibrationacoustics/article-pdf/126/4/485/5654103/485_1.pdf

Reference28 articles.

1. Rao, J. S., 1991, Turbomachine Blade Vibration, John Wiley and Sons, Inc., New York.

2. Heywood, R. B., 1962, Designing Against Fatigue, Chapman and Hall.

3. Collins, J. A., 1981, Failure of Materials in Mechanical Design, John Wiley and Sons Inc., New York.

4. Osgood, Carl C., 1982, Fatigue Design, Pergamon Press.

5. Rust, T., and Swaminathan, V. P., 1982. “Corrosion Fatigue Testing of Steam Turbine Blading Alloys,” Proc. EPRI Workshop on Steam Turbine Reliability, Boston, MA.

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