Enriched Force-Based Frame Element with Evolutionary Plastic Hinge
Publication: Journal of Structural Engineering
Volume 143, Issue 10
Abstract
This paper presents a novel enriched force-based formulation for beam-column elements. The enrichment was developed on the basis of the concept of evolutionary plastic hinges and incorporated with conventional force-based element formulation. The evolutionary plastic hinge was activated on the basis of the crushing of concrete and/or yielding of reinforcement, whereas its length was calculated adaptively according to real-time sectional forces. Several representative numerical examples are demonstrated, verifying that the proposed model can achieve accurate and objective responses regardless of the number of integration points. The spreading of plasticity in strain-hardening problems and the localization of deformation in strain-softening problems can be captured well by the proposed element.
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Acknowledgments
Financial supports from National Key Research and Development Program of China (No. 2016YFC0701400), the National Natural Science Foundation of China (No. 51678439), and the Fundamental Research Funds for the Central Universities (No. 2242017K30002) are greatly appreciated.
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Published In
Journal of Structural Engineering
Volume 143 • Issue 10 • October 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Oct 12, 2016
Accepted: Apr 18, 2017
Published online: Jul 22, 2017
Published in print: Oct 1, 2017
Discussion open until: Dec 22, 2017
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