Modeling of Buckling and Wrinkling Behavior in GFRP Plate and Sandwiches Subjected to Biaxial Compression–Tension Loading
Publication: Journal of Composites for Construction
Volume 16, Issue 4
Abstract
A model for predicting the buckling and wrinkling behavior of glass-fiber-reinforced polymer (GFRP) plates and sandwich panels subjected to in-plane biaxial compression–tension loading is presented in this paper. In-plane biaxial compression–tension loading occurs in the webs of plate girders or cell-core sandwiches. The model is able to simulate two counteracting effects of increasing transverse tension load on buckling and wrinkling loads as observed in experiments. A stabilizing effect tends to push the plate back to the median plane and thereby delays the onset of buckling/wrinkling instability. In contrast, lateral contraction accelerates the bending of the plate, which leads to a significant decrease in buckling/wrinkling loads. In composite plates, the first effect predominates and increases the buckling loads, while in sandwich panels the second effect is dominant and decreases the wrinkling loads. The theoretical predictions are in good agreement with the corresponding experimental results.
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Acknowledgments
The authors would like to thank the Swiss Innovation Promotion Agency CTI (Grant No. 9121.1 PFIW-IW) and industry partners Scobalit Composites, Winterthur, Switzerland, and Ernst Basler & Partner AG Zurich, Switzerland, for their support of this project, and the EPFL Laboratory of Applied Mechanics and Reliability (LMAF) for use of the biaxial testing system.
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Information
Published In
Journal of Composites for Construction
Volume 16 • Issue 4 • August 2012
Pages: 477 - 487
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Sep 12, 2011
Accepted: Dec 15, 2011
Published online: Dec 20, 2011
Published in print: Aug 1, 2012
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