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Reliability Analysis on Structures Based on a Modified Iterative Response Surface Method
Joint Authors
Wei, Yanxu
Bai, Guang-Chen
Bai, Bin
Wang, Bowei
Source
Mathematical Problems in Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-25
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
In order to improve the computational accuracy and efficiency of response surface method for reliability analysis on structures, a modified iterative response surface method (called as NDIRSM) is proposed.
Firstly, a new starting center point, which is closer to design point, is calculated out as the starting center point instead of the point at mean values of input variables and a dynamic factor vector f1, which is inversely proportional to the change rate of performance function with respect to variance, is calculated out for the first iteration.
Then the arbitrary factors fk are determined according to the design matrix condition number for the subsequent iteration.
Thus the sample points are close to limit state function and the response surface function can approximate the limit state function accurately and efficiently.
Two examples are employed to validate the advantages of NDIRSM and the results show that NDIRSM improves the computational accuracy and efficiency of response surface method.
At last, NDIRSM is applied to the reliability analysis on low cycle fatigue life of a gas turbine disc, which provides a useful reference for reliability analysis on low cycle fatigue life of gas turbine disc and demonstrates the high computational accuracy and efficiency of NDIRSM.
American Psychological Association (APA)
Wei, Yanxu& Bai, Guang-Chen& Wang, Bowei& Bai, Bin. 2018. Reliability Analysis on Structures Based on a Modified Iterative Response Surface Method. Mathematical Problems in Engineering،Vol. 2018, no. 2018, pp.1-14.
https://search.emarefa.net/detail/BIM-1209488
Modern Language Association (MLA)
Wei, Yanxu…[et al.]. Reliability Analysis on Structures Based on a Modified Iterative Response Surface Method. Mathematical Problems in Engineering No. 2018 (2018), pp.1-14.
https://search.emarefa.net/detail/BIM-1209488
American Medical Association (AMA)
Wei, Yanxu& Bai, Guang-Chen& Wang, Bowei& Bai, Bin. Reliability Analysis on Structures Based on a Modified Iterative Response Surface Method. Mathematical Problems in Engineering. 2018. Vol. 2018, no. 2018, pp.1-14.
https://search.emarefa.net/detail/BIM-1209488
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1209488