Research Article
Aug 1979
Post-Buckling Behavior under Mode Interaction
Authors: Antonio J. Reis and John RoordaAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 105, Issue 4
Abstract
The post-buckling behavior of continuous elastic systems under interaction of two symmetric stable or unstable modes, is considered. For the cases of two stable (unstable) modes with a negative (positive) interaction coefficient, it is shown that mode interaction increases imperfection sensitivity whenever a 2 times 2 energy matrix of the perfect system is indefinite (negative definite). Cases where the simultaneous mode design criterion does not lead to an increased imperfection sensitivity are considered. An example of this situation is supported by experimental results.
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Published In
Journal of the Engineering Mechanics Division
Volume 105 • Issue 4 • August 1979
Pages: 609 - 621
Copyright
© 1979 American Society of Civil Engineers.
History
Published in print: Aug 1979
Published online: Feb 3, 2021
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Antonio J. Reis
Asst. Prof. of Civ. Engrg., Instituto Superior Technico, Technical Univ. of Lisbon, Lisbon, Portugal
John Roorda
Prof. of Civ. Engrg., Univ. of Waterloo, Warterloo, Ontario, Canada
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