Nonlinear Discrete Mechanical Model of Steel Rings
Publication: Journal of Engineering Mechanics
Volume 143, Issue 9
Abstract
Circular rings are used in various engineering structures because of their nonlinear properties. The use of large assemblies of steel rings in flexible ring nets is widespread in recent technologies of protection structures and their design requires a nonlinear and computationally efficient mechanical modeling. This paper presents an innovative discrete model of steel rings for application in flexible protection structures. The model aims at providing an effective mechanical response of the net at both the local ring scale and the global net scale. Two different uniaxial tension configurations are defined as reference loading cases and the nonlinear analytical response of the ring model to these loading cases is established. A multicriteria numerical method based on the Levenberg-Marquardt algorithm is developed to calibrate the model parameters from experimental data. An experimental campaign on steel wire spliced rings of different dimensions is conducted and permits the calibration and validation of the model.
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Acknowledgments
The authors would like to thank the CAN company for their investment and support in the experimental campaign, providing the rings, testing machine, and sensors. The authors would also like to thank the Vulnérabilité des Ouvrages aux Risques (VOR) research platform for financing the construction of the testing frame. Developments presented in this paper will be part of the French National Project C2ROP (Chute de Blocs, Risques Rocheux et Ouvrages de Protection, www.c2rop.fr).
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 143 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Dec 6, 2016
Accepted: Mar 7, 2017
Published online: Jun 14, 2017
Published in print: Sep 1, 2017
Discussion open until: Nov 14, 2017
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