NDLI: Lifetime prediction for turbine discs based on a modified Walker strain model

Content Provider	Springer Nature Link
Author	Lv, Zhiqiang Huang, Hong Zhong Gao, Huiying Zuo, Fang Jun Wang, Hai Kun
Copyright Year	2015
Abstract	We created three-dimensional models of turbine disc and blades of a type of aero-engine according to their geometries. Extant studies show that low cycle fatigue is the main failure mechanism of turbine disc. By using a non-linear elastic-plastic finite element method, the static stress and strain state of the critically high stress regions, which can lead to operational failures, are determined. On the basis of stress-strain relation, a modified Walker strain life prediction model is proposed with no required knowledge on the mean stress correction. Then the predicted life data from the modified Walker strain model are compared with the testing results. After the verification, the modified Walker strain life prediction model and Miner’s rule were applied to predict the lifetime of the turbine disc under various operating conditions.
Starting Page	4143
Ending Page	4152
Page Count	10
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	29
Issue Number	10
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2015-10-15
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Turbine disc Finite element method Low cycle fatigue Life prediction Modified Walker strain model Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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