Fatigue Reliability under Nonstationary Loads: Model Application
Publication: Journal of Structural Engineering
Volume 119, Issue 8
Abstract
This paper presents the numerical implementation of an analytic procedure for calculating the expected low‐cycle fatigue damage for a structure subjected to a nonstationary load. This implementation investigates a spherical storage tank subjected to earthquake ground motions. Numerical modeling parameters are selected to provide acceptable accuracy and efficient calculation time. The modeling parameters are normalized to permit their application to future studies.
Physical modeling parameters, such as ground‐motion intensity and duration, as well as material properties, such as cyclic strength and fatigue ductility, have a significant impact on the expected damage. Notch effects also affect the expected damage. For parameters representing a moderate earthquake and typical industrial structures and materials, the expected damage in the shell is found to be small. The accuracy of the analytic procedure was verified through Monte Carlo simulation.
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Information
Published In
Journal of Structural Engineering
Volume 119 • Issue 8 • August 1993
Pages: 2441 - 2460
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Feb 24, 1992
Published online: Aug 1, 1993
Published in print: Aug 1993
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