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Article
A Random Field Method for Time-Dependent Reliability Analysis with Random and Interval Variables
Proceedings of the ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (2016, Charlotte, NC)
  • Zhangli Hu
  • Xiaoping Du, Missouri University of Science and Technology
Abstract
In many engineering applications, both random and interval variables exist. Some of the random variables may also vary over time. As a result, the reliability of a component not only decreases with time but also resides in an interval. Evaluating the time-dependent reliability bounds is a challenging task because of the intensive computational demand. This research develops a method that treats a time-dependent random response as a random field with respect to both intervals and time. Consequently, random field methodologies can be used to estimate the worse-case time-dependent reliability. The method employs the first-order reliability method, which results in a Gaussian random field for the response with respect to intervals and time. The Kriging method and Monte Carlo simulation are then used to estimate the worse-case reliability without calling the original limit-state function. Good efficiency and accuracy are demonstrated through examples.
Meeting Name
ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (2016: Aug. 21-24, Charlotte, NC)
Department(s)
Mechanical and Aerospace Engineering
Keywords and Phrases
  • Computer aided design,
  • Design,
  • Gaussian distribution,
  • Intelligent systems,
  • Monte Carlo methods,
  • Reliability,
  • Structural analysis,
  • Computational demands,
  • Engineering applications,
  • First order reliability methods,
  • Gaussian random fields,
  • Interval variable,
  • Limit state functions,
  • Time dependent reliability,
  • Time dependent reliability analysis,
  • Reliability analysis
International Standard Book Number (ISBN)
9780791850114
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2016 American Society of Mechanical Engineers (ASME), All rights reserved.
Publication Date
8-1-2016
Citation Information
Zhangli Hu and Xiaoping Du. "A Random Field Method for Time-Dependent Reliability Analysis with Random and Interval Variables" Proceedings of the ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (2016, Charlotte, NC) Vol. 2B-2016 (2016)
Available at: http://works.bepress.com/xiaoping-du/1/