Numerical Models Validation of Cracked Square Hollow Section (SHS) - and -Joints
Publication: Journal of Structural Engineering
Volume 137, Issue 10
Abstract
To validate the accuracy of finite-element models of cracked square hollow section (SHS) - and -joints, two full-scale precracked specimens were tested under static incremental loads up to failure. The load-displacement curves were plotted during the tests, and a set of linear variable displacement transducers (LVDTs) were used to record the crack mouth opening displacements (CMOD) at the deepest points, whereas the crack extension was captured using the standard Alternating Current Potential Drop (ACPD) technique. The experimental results are compared with the corresponding numerical results obtained using the nonlinear finite-element method. Both sets of results show good agreement with maximum percentage differences of 7.15 and 7.96% for the plastic collapse loads and crack mouth opening displacements, respectively. Hence, the numerical model adopted previously for the cracked SHS -joints is robust and can also be used to estimate the plastic collapse load and crack driving force of any uniplanar tubular cracked - and -joints.
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Acknowledgments
The authors would like to thank the Maritime Research Centre in the School of Civil and Environmental Engineering at the Nanyang Technological University, Singapore, and the Maritime Port Authority of Singapore for kindly funding this ongoing research project.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 137 • Issue 10 • October 2011
Pages: 1132 - 1140
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Jan 5, 2010
Accepted: Nov 12, 2010
Published online: Nov 16, 2010
Published in print: Oct 1, 2011
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