TY - JOUR
T1 - Experimental and numerical investigation of pultruded GFRP circular hollow tubular columns under concentric and eccentric loading
AU - Higgoda, Thumitha Mandula
AU - Elchalakani, Mohamed
AU - Kimiaei, Mehrdad
AU - Wittek, Adam
AU - Yang, Bo
N1 - Funding Information:
The authors would like to acknowledge VHM Solutions, Australia for their technical and financial support as well as the supply of the materials required to undertake this research. The authors also acknowledge the Master of engineering students, Vincent Lim and Annie Vu, for their contributions in the workshop. The authors are thankful to the senior lab technicians Stephen Naulls and Mark Henderson for their help in setting up the experiments in the lab. The research was conducted while the first author was in receipt of a financial scholarship co-funded by the University of Western Australia and VHM Solutions, Australia.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/1/15
Y1 - 2023/1/15
N2 - This paper presents an experimental investigation of pultruded glass fibre reinforced polymer (GFRP) circular hollow section (CHS) columns under concentric and eccentric compression. The member slenderness of the selected columns was in the short, intermediate, and long range, and two different eccentricities were chosen within the column's cross section. Predominant failure modes observed in the experiment include longitudinal splitting and localized delamination buckling. The load-carrying capacities of the concentric column under different slenderness values were quantified and compared with existing design rules. Under eccentric loading, the ultimate loads of the columns decrease with increasing eccentricity and slenderness, and the load–strain behaviour displayed non–linear characteristics due to geometric non-linearity. Failure modes of all the tested columns were well predicted by the FE models, and it was found that splitting material failure was due to hoop matrix tensile rupture.
AB - This paper presents an experimental investigation of pultruded glass fibre reinforced polymer (GFRP) circular hollow section (CHS) columns under concentric and eccentric compression. The member slenderness of the selected columns was in the short, intermediate, and long range, and two different eccentricities were chosen within the column's cross section. Predominant failure modes observed in the experiment include longitudinal splitting and localized delamination buckling. The load-carrying capacities of the concentric column under different slenderness values were quantified and compared with existing design rules. Under eccentric loading, the ultimate loads of the columns decrease with increasing eccentricity and slenderness, and the load–strain behaviour displayed non–linear characteristics due to geometric non-linearity. Failure modes of all the tested columns were well predicted by the FE models, and it was found that splitting material failure was due to hoop matrix tensile rupture.
KW - Circular tubular columns
KW - Delamination buckling
KW - Eccentric
KW - GFRP
KW - Longitudinal splitting
UR - http://www.scopus.com/inward/record.url?scp=85141316125&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2022.116427
DO - 10.1016/j.compstruct.2022.116427
M3 - Article
AN - SCOPUS:85141316125
SN - 0263-8223
VL - 304
JO - Composite Structures
JF - Composite Structures
M1 - 116427
ER -