Determination of Stress Intensity Factors in Low Pressure Turbine Rotor Discs
Joint Authors
Bakic, Gordana
Maksimovic, Stevan
Maksimovic, Mirko
Stupar, Slobodan
Vasovic, Ivana
Maksimovic, Katarina
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-01
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
An attention in this paper is focused on the stress analysis and the determination of fracture mechanics parameters in low pressure (LP) turbine rotor discs and on developing analytic expressions for stress intensity factors at the critical location of LP steam turbine disc.
Critical locations such as keyway and dovetail area experienced stress concentration leading to crack initiation.
Major concerns for the power industry are determining the critical locations with one side and fracture mechanics parameters with the other side.
For determination of the critical locations in LP turbine rotor disc conventional finite elements are used here.
For this initial crack length and during crack growth it is necessary to determine SIFs.
In fatigue crack growth process it is necessary to have analytic formulas for the stress intensity factor.
To determine analytic formula for stress intensity factor (SIF) of cracked turbine rotor disc special singular finite elements are used.
Using discrete values of SIFs which correspond to various crack lengths analytic formula of SIF in polynomial forms is derived here.
For determination of SIF in this paper, combined J-integral approach and singular finite elements are used.
The interaction of mechanical and thermal effects was correlated in terms of the fracture toughness.
American Psychological Association (APA)
Vasovic, Ivana& Maksimovic, Stevan& Maksimovic, Katarina& Stupar, Slobodan& Bakic, Gordana& Maksimovic, Mirko. 2014. Determination of Stress Intensity Factors in Low Pressure Turbine Rotor Discs. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-461881
Modern Language Association (MLA)
Vasovic, Ivana…[et al.]. Determination of Stress Intensity Factors in Low Pressure Turbine Rotor Discs. Mathematical Problems in Engineering No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-461881
American Medical Association (AMA)
Vasovic, Ivana& Maksimovic, Stevan& Maksimovic, Katarina& Stupar, Slobodan& Bakic, Gordana& Maksimovic, Mirko. Determination of Stress Intensity Factors in Low Pressure Turbine Rotor Discs. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-461881
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-461881