Numerical study and design rule for axial capacities of pultruded GFRP hollow columns

Kasiviswanathan, M.; Anbarasu, M.

doi:10.1016/j.istruc.2022.03.039

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…They observed predominant failure modes such as longitudinal splitting and localised delamination buckling during the test. Based on the curve fitting technique, Kasiviswanathan and Upadhyay [29] proposed strength equations to predict the axial capacities of hollow GFRP columns. Zhan and Wu [30,31] developed an innovative closed-form design equation based on the Ayrton-Perry formula to estimate the load capacity for pultruded doubly symmetric cross-sections subjected to global buckling.…”

Section: Introductionmentioning

confidence: 99%

Numerical Parametric Study and Design of Pultruded GFRP Composite Channel Columns

Anbarasu¹,

Kasiviswanathan²,

Kathiresan³

et al. 2023

Sustainability

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This article reports the finite element (FE) investigation of the axial capacities of pultruded fiber-reinforced polymer (PFRP) composite channel columns. The nonlinear finite element model (FEM) was developed by using the ABAQUS package for glass fiber-reinforced polymer (GFRP) composite channel columns, which included geometric and initial geometric imperfections. The developed FEMs were verified against an experimental result available in the literature for GFRP channel columns. The validated FEMs were used to carry out the parametric study comprising 61 FE models to investigate the effect of different geometries, plate slenderness and the length of members on the axial capacities of GFRP pultruded channel columns. The results obtained from the parametric study were used to examine the accuracy of the current Italian guidelines, American pre-standard and the Direct Strength Method (DSM) proposed in the literature for GFRP channel profiles. Based on the obtained results, the suitability of the current design guidelines is assessed and, also, a new set of design equations is proposed to estimate the axial capacity of the pultruded GFRP channel columns. The new proposed set of reliable design equations witnessed a less scattered and a high degree of accuracy in determining the axial load capacity of the pultruded GFRP composite channel columns.

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Section: Introductionmentioning

confidence: 99%