Reliability analysis of dynamic fiber bundle models

Suprasad V. Amari, Hoang Pham

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Fiber bundle models are useful tools for explaining dynamic failure behavior in heterogeneous materials. Such models shed light on diverse phenomena such as fatigue in structural materials and earthquakes in geophysical settings. Building good theoretical models has proven straightforward, but analyzing them has required delving into statistical details of the interaction of various flaw features and failure configurations, which has proven to be deceptively difficult. In this paper, we present a new method for reliability analysis of dynamic fiber bundle models. As in previous works, we assume that a fiber has a failure rate following a power law in its load level. However, unlike the exponential distribution used in the previous works, we consider that the remaining lifetimes of the surviving fibers follow Weibull distributions according to either the cumulative exposure model or tampered failure rate model. We develop both exact asymptotic reliability formulas and easy to compute bounds. Further, we also describe a fast simulation algorithm that greatly increases the bundle sizes that can be analyzed.

Original languageEnglish (US)
Title of host publication2009 Proceedings - Annual Reliability and Maintainability Symposium, RAMS 2009
Pages1-6
Number of pages6
DOIs
StatePublished - 2009
Event2009 - Annual Reliability and Maintainability Symposium, RAMS 2009 - Fort Worth, TX, United States
Duration: Jan 26 2009Jan 29 2009

Publication series

NameProceedings - Annual Reliability and Maintainability Symposium
ISSN (Print)0149-144X

Other

Other2009 - Annual Reliability and Maintainability Symposium, RAMS 2009
CountryUnited States
CityFort Worth, TX
Period1/26/091/29/09

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Mathematics(all)
  • Computer Science Applications

Keywords

  • Equal load sharing rule
  • Fiber bundle models
  • Load-sharing system
  • Power-law breakdown rule
  • System reliability

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