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http://dx.doi.org/10.5050/KSNVE.2012.22.2.123

Fatigue Damage Prediction Using Design Sensitivity Analysis  

Kim, Chan-Jung (자동차부품연구원)
Lee, Bong-Hyun (자동차부품연구원 ICE/EV구동융합연구센터)
Jeon, Hyun-Cheol (서울대학교 기계항공공학부 대학원)
Jo, Hyeon-Ho (서울대학교 기계항공공학부 대학원)
Kang, Yeon-June (서울대학교 기계항공공학부(정밀기계공동연구소))
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.22, no.2, 2012 , pp. 123-129 More about this Journal
Abstract
It was previously suggested the design sensitivity analysis based on transmissibility function to identify the most sensitive response location over a small design modification. On the other hand, energy isoclines were used to predict the fatigue damage with acceleration response only. Both of previous studies commonly tackle the engineering problem using the acceleration response alone such that it may be possible to investigate the relationship between sensitivity analysis and accumulated fatigue damage. In this paper, it is suggested the novel method of vibration fatigue prediction using design sensitivity analysis to enhance the accuracy of predicted accumulated fatigue. Uni-axial vibration testing is performed with a simple notched specimen and the prediction of fatigue damage is conducted using accelerations measured at different locations. It can be concluded that the accuracy of predicted fatigue damage is proportional to the sensitivity index of the responsible location.
Keywords
Design Sensitivity Analysis; Vibration Fatigue Prediction; Transimissibility; Linear Elastic System; Uni-axial Vibration Test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Kim, C. J., Kang, Y. J. and Lee, B. H., 2011, Sensitivity Analysis for Reducing Critical Responses at Axle Shaft of Light-weighted Vehicle, International Journal of Automotive Technology, Accepted.
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3 Kim, C. J., Kang, Y. J. and Lee, B. H., 2012, Generation of Driving Profile on a Multi-axial Vibration Table for Vibration Fatigue Testing, Mechanical Systems and Signal Processing, 26, pp. 244-253.   DOI
4 Bayissa, W. L. and Haritos, N., 2007, Structural Damage Identification in Plates Using Spectral Strain Energy Analysis, Journal of Sound and Vibration, Vol. 307, pp. 226-249.   DOI
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8 Kim, C. J., 2011, Analysis of Vibration Fatigue of Linear Elastic Systems Using Measured Acceleration Responses, Doctoral Dissertation, Seoul National University.