Accession Number:

AD0763780

Title:

An Approach to the Analysis of the Nonlinear Deformation and Fatigue Response of Components Subjected to Complex Service Load Histories,

Descriptive Note:

Corporate Author:

WATERLOO UNIV (ONTARIO) DEPT OF CIVIL ENGINEERING

Personal Author(s):

Report Date:

1973-03-01

Pagination or Media Count:

28.0

Abstract:

The report describes recent progress in developing a fatigue analysis procedure suitable for complex load histories. A plastic notch deformation analysis is coupled with a model of inelastic material deformation response to determine the stress-strain history at the crack initiation location. Damage is computed by a technique which assesses events in this stress-strain history in terms of the fully reversed cycles encountered in the strain controlled tests used to determine material fatigue properties. The material fatigue properties as they are employed in assessing fatigue resistance are represented in a parametric form which accounts for the influence of mean stress and straining sequence on fatigue life. Emphasis is placed on the integration of research in the various areas of fatigue into a comprehensive fatigue analysis procedure. A computer program for the fatigue analysis of notched parts subjected to complex load histories is used to illustrate one such procedure. Author

Subject Categories:

  • Metallurgy and Metallography
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE