Development of Closed-Form Equations for Estimating the Elastic Local Buckling Capacity of Pultruded FRP Structural Shapes
Publication: Journal of Composites for Construction
Volume 21, Issue 4
Abstract
The main objective of this paper is to develop closed-form equations for estimating the elastic local buckling capacity of pultruded fiber-reinforced polymer (FRP) structural shapes. This includes I-sections, channels, angles, and Z-sections that are loaded either in bending or axial compression. A comprehensive parametric study is conducted to investigate the effect of each of the parameters of the problem. The results of the parametric study were used to conduct a regression analysis to develop closed-form equations for estimating the elastic local buckling capacity for each of the shapes considered. The developed equations were validated by using them to estimate the local buckling capacity of a number of sections and comparing the results with the exact elastic analysis. Furthermore, the equation results were compared with some reported experimental data. The developed equations were successful in estimating the elastic local buckling capacity with error values that did not exceed 2%, and their results were generally in good agreement with the experimental data. A numerical example is given to illustrate the use of the proposed equations.
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Published In
Journal of Composites for Construction
Volume 21 • Issue 4 • August 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Sep 6, 2016
Accepted: Dec 5, 2016
Published online: Feb 17, 2017
Discussion open until: Jul 17, 2017
Published in print: Aug 1, 2017
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