Parametric Equations to Predict SCF of Axially Loaded Completely Overlapped Tubular Circular Hollow Section Joints
Publication: Journal of Structural Engineering
Volume 134, Issue 3
Abstract
This paper presents a set of parametric equations for predicting the stress concentration factor (SCF) at the crown toe, saddle, and crown heel of completely overlapped tubular circular hollow section joints under lap brace axial compression. In the study, a joint specimen is tested within the elastic limit of steel material for the verification of finite-element (FE) models. The comparison of results showed that the 8-node thick shell and the 20-node solid FE models simulate reasonably well the test specimen with average difference in strain concentration factor (SNCF) of 7.9 and 8.8%, respectively. The mean SCF-to-SNCF ratio of the joint is 1.15. The parametric equations are developed based on 5,184 8-node thick shell FE models and have been assessed against the Fatigue Guidance Review Panel criteria, the current and previous test data and the FE database. The results of the statistical analysis, which based on the frequency of occurrence of predicted-to-measured SCF, showed that the performances of the proposed parametric equations are acceptable.
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Acknowledgments
The research scholarship awarded by the School of Civil and Environmental Engineering, Nanyang Technological University, to the first writer is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 134 • Issue 3 • March 2008
Pages: 412 - 420
Copyright
© 2008 ASCE.
History
Received: Oct 20, 2005
Accepted: Jul 19, 2007
Published online: Mar 1, 2008
Published in print: Mar 2008
Notes
Note. Associate Editor: James S. Davidson
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