Life prediction of a curvilinear fatigue crack growth by SBIEM

Yuan Jie Lua*, Wing Kam Liu, Ted Belytschko

*Corresponding author for this work

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

2 Scopus citations

Abstract

The Stochastic Boundary Integral Equation Method (SBIEM), which combines the mixed boundary integral equation method with the first order reliability method, is developed to predict the life of a probabilistic fatigue crack growth. Due to the interaction between a growing crack and the external boundary, the mixed BIEM is developed. The direct differentiation coupled with the response-surface method is employed to determine the response gradient. An iteration scheme based on the HL-RF method is applied to locate the most probable failure point on the limit state surface. The accuracy and efficiency of SBIEM are evaluated through comparing the cumulative distribution function of the fatigue life obtained by SBIEM and Monte Carlo simulation. The reliability index, response sensitivity and locus of primary random parameters at the design point are determined for a fatigue crack growth problem with randomness in the crack geometry, defect geometry, fatigue parameters and external loads.

Original languageEnglish (US)
Title of host publicationReliability Technology - 1992
PublisherPubl by ASME
Pages99-111
Number of pages13
Volume28
ISBN (Print)079181095X
StatePublished - Dec 1 1992
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Anaheim, CA, USA
Duration: Nov 8 1992Nov 13 1992

Other

OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAnaheim, CA, USA
Period11/8/9211/13/92

ASJC Scopus subject areas

  • Space and Planetary Science
  • Mechanical Engineering

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