Contribution to shear wrinkling of GFRP webs in cell-core sandwiches

Glass-fiber-reinforced polymer (GFRP) cell-core sandwiches are composed of outer GFRP face sheets, a foam core, and a grid of GFRP webs integrated into the core to reinforce the shear load capacity. One of the critical failure modes of cell-core sandwich structures is shear wrinkling, a local buckling failure in the sandwich webs because of shear loading. The shear wrinkling behavior of GFRP laminates with different laminate sequences, stabilized by a polyurethane foam core, was experimentally and numerically investigated. Shear wrinkling was simulated by a biaxial compression-tension setup. The results show that an increasing transverse tension load significantly decreases the wrinkling load. The decreasing effect of tension is explained by the lateral contraction because of Poisson's effect, which causes an increase in the initial imperfections and subsequent accelerated bending. DOI: 10.1061/(ASCE)CC.1943-5614.0000212. (C) 2011 American Society of Civil Engineers.


Published in:
Journal of Composites for Construction , 15, 5, 833-840
Year:
2011
Publisher:
American Society of Civil Engineers
ISSN:
1090-0268
Keywords:
Laboratories:




 Record created 2011-05-30, last modified 2018-09-13


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)