FATIGUE RELIABILITY UNDER STOCHASTIC LOAD

In this paper a model developed by the authors for crack growth under stochastic loading incorporating sequence effects is inserted into fatigue reliability analysis. The goal is the estimation of the probability distribution of the number of cycles to failure. A probabilistic fracture mechanics growth model is used to quantify fatigue damage for a given number of cycles. The important sources of uncertainties include fatigue resistance, external loading and initial crack size. Suitable probabilistic models for the above variables are presented and the advanced mean value first order methods is used to minimize the number of functions to be evaluated in the computation of the probability of failure. A numerical example showing the calculation of the probability distribution of the number of cycles to failure of a structural element is presented.

  • Supplemental Notes:
    • OMAE 1995, 14th Intl Conf on Offshore Mechanics & Arctic Engng; 18-22 June 1995; Copenhagen, Denmark. Sponsored by ASME et al. Procs. Publ by ASME, ISBN 0-7918-1308-8. Vol II, p 207 [8 p, 27 ref, 3 tab, 2 fig]
  • Authors:
    • Colombi, P
    • Dolinski, K
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00718766
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM