NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Probabilistic finite elements for fracture and fatigue analysisThe fusion of the probabilistic finite element method (PFEM) and reliability analysis for probabilistic fracture mechanics (PFM) is presented. A comprehensive method for determining the probability of fatigue failure for curved crack growth was developed. The criterion for failure or performance function is stated as: the fatigue life of a component must exceed the service life of the component; otherwise failure will occur. An enriched element that has the near-crack-tip singular strain field embedded in the element is used to formulate the equilibrium equation and solve for the stress intensity factors at the crack-tip. Performance and accuracy of the method is demonstrated on a classical mode 1 fatigue problem.
Document ID
19910015019
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Liu, W. K. (Northwestern Univ. Evanston, IL, United States)
Belytschko, T. (Northwestern Univ. Evanston, IL, United States)
Lawrence, M. (Northwestern Univ. Evanston, IL, United States)
Besterfield, G. H. (Northwestern Univ. Evanston, IL, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1989
Publication Information
Publication: NASA. Lewis Research Center, Structural Integrity and Durability of Reusable Space Propulsion Systems
Subject Category
Structural Mechanics
Accession Number
91N24332
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available