Reliability-Based Analytic Models for Fatigue Lifetime Distribution Estimation of Series Mechanical Systems under Random Load considering Strength Degradation Path Dependence
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-14
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Time-dependent statistical characteristics of load process and strength degradation process are critical to lifetime distribution of series mechanical systems.
Conventional rain-flow counting method for lifetime distribution estimation has limited practical application due to its strict requirement for statistical properties of load process.
Besides, dynamic interaction between load process and strength degradation process results in strength degradation path dependence (SDPD).
SDPD and failure dependence of components jointly bring considerable difficulties in prediction of system lifetime distribution and system residual lifetime distribution.
To address these problems, reliability-based analytic models for estimation of whole lifetime distribution and residual lifetime distribution of series mechanical systems under random load are developed in this paper, which take the time-dependent statistical parameters of load process and strength degradation process as the input of the models.
Furthermore, SDPD and failure dependence of components are taken into account in the proposed models in an explicit mathematical expression.
The results show that SDPD, failure dependence of components, and initial strength dispersion have significant influences on system lifetime distribution.
American Psychological Association (APA)
Gao, Peng& Xie, Liyang. 2017. Reliability-Based Analytic Models for Fatigue Lifetime Distribution Estimation of Series Mechanical Systems under Random Load considering Strength Degradation Path Dependence. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1190689
Modern Language Association (MLA)
Gao, Peng& Xie, Liyang. Reliability-Based Analytic Models for Fatigue Lifetime Distribution Estimation of Series Mechanical Systems under Random Load considering Strength Degradation Path Dependence. Mathematical Problems in Engineering No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1190689
American Medical Association (AMA)
Gao, Peng& Xie, Liyang. Reliability-Based Analytic Models for Fatigue Lifetime Distribution Estimation of Series Mechanical Systems under Random Load considering Strength Degradation Path Dependence. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1190689
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1190689