Low-Cycle Bending-Fatigue Strength of Steel Bars under Random Excitation. Part I: Behavior
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Volume 131, Issue 6
Abstract
In this study, a series of tests were conducted to investigate the behaviors of low-cycle bending-fatigue on A36 square and rectangular steel bars. It is observed that using the test results of constant cyclic loading to predict the strength of low-cycle bending fatigue under random loadings may introduce large error. In this study, the microstructure of the specimens is further examined after the tests and a physical model is established describing the failure mechanism of the steel bar. It is concluded that the strength of low-cycle bending fatigue of A36 structural steel highly depends on the orientation angles of the grains.
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Acknowledgment
The writers gratefully acknowledge the financial support of the Federal Highway Administration (Contract No UNSPECIFIEDDIFH61-98-6-00094).
References
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Liu, W. C. (2001). “Low cycle fatigue of A36 steel bars subjected to bending with variable amplitudes.” PhD dissertation, State Univ. of New York at Buffalo, Buffalo, N.Y.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 6 • June 2005
Pages: 913 - 918
Copyright
© 2005 ASCE.
History
Received: Dec 18, 2003
Accepted: Aug 16, 2004
Published online: Jun 1, 2005
Published in print: Jun 2005
Notes
Note. Associate Editor: Christopher J. Earls
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