Pre-buckling imperfection sensitivity of pultruded FRP profiles

Luigi Ascione, Valentino Paolo Berardi, Antonella Giordano, Saverio Spadea

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This paper presents a geometrically non-linear one-dimensional model suitable for analyzing thin-walled fiber-reinforced polymer profiles, which accounts for the effect of manufacturing imperfections. The kinematic model is developed under the hypotheses of small strains and moderately large rotations of the cross-sections, and is able to take into consideration the contribution of shear strains and the effects related to warping displacements. The aim of the study is to develop a proper tool to analyze the pre-buckling behavior of such beams, since current approaches based on two-dimensional finite element method analysis demand significant computational efforts to be applied to real structures. The numerical results underline the effectiveness of the proposed mechanical model in analyzing case studies of technical interest in Civil Engineering, and the relevant influence of geometrical imperfections on the structural performance of FRP components with regard to serviceability design requirements.

Original languageEnglish
Pages (from-to)206-212
Number of pages7
JournalComposites Part B: Engineering
Volume72
Early online date15 Dec 2014
DOIs
Publication statusPublished - Apr 2015

Fingerprint

Buckling
Defects
Shear strain
Civil engineering
Polymers
Kinematics
Finite element method
Fibers

Keywords

  • B. Buckling
  • B. Defects
  • C. Numerical analysis
  • E. Pultrusion

Cite this

Ascione, Luigi ; Berardi, Valentino Paolo ; Giordano, Antonella ; Spadea, Saverio. / Pre-buckling imperfection sensitivity of pultruded FRP profiles. In: Composites Part B: Engineering. 2015 ; Vol. 72. pp. 206-212.
@article{a513375309ff421ab29a3d212c9ce508,
title = "Pre-buckling imperfection sensitivity of pultruded FRP profiles",
abstract = "This paper presents a geometrically non-linear one-dimensional model suitable for analyzing thin-walled fiber-reinforced polymer profiles, which accounts for the effect of manufacturing imperfections. The kinematic model is developed under the hypotheses of small strains and moderately large rotations of the cross-sections, and is able to take into consideration the contribution of shear strains and the effects related to warping displacements. The aim of the study is to develop a proper tool to analyze the pre-buckling behavior of such beams, since current approaches based on two-dimensional finite element method analysis demand significant computational efforts to be applied to real structures. The numerical results underline the effectiveness of the proposed mechanical model in analyzing case studies of technical interest in Civil Engineering, and the relevant influence of geometrical imperfections on the structural performance of FRP components with regard to serviceability design requirements.",
keywords = "B. Buckling, B. Defects, C. Numerical analysis, E. Pultrusion",
author = "Luigi Ascione and Berardi, {Valentino Paolo} and Antonella Giordano and Saverio Spadea",
year = "2015",
month = "4",
doi = "10.1016/j.compositesb.2014.12.014",
language = "English",
volume = "72",
pages = "206--212",
journal = "Composites Part B: Engineering",
issn = "1359-8368",
publisher = "Elsevier Ltd",

}

Pre-buckling imperfection sensitivity of pultruded FRP profiles. / Ascione, Luigi; Berardi, Valentino Paolo; Giordano, Antonella; Spadea, Saverio.

In: Composites Part B: Engineering, Vol. 72, 04.2015, p. 206-212.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Pre-buckling imperfection sensitivity of pultruded FRP profiles

AU - Ascione, Luigi

AU - Berardi, Valentino Paolo

AU - Giordano, Antonella

AU - Spadea, Saverio

PY - 2015/4

Y1 - 2015/4

N2 - This paper presents a geometrically non-linear one-dimensional model suitable for analyzing thin-walled fiber-reinforced polymer profiles, which accounts for the effect of manufacturing imperfections. The kinematic model is developed under the hypotheses of small strains and moderately large rotations of the cross-sections, and is able to take into consideration the contribution of shear strains and the effects related to warping displacements. The aim of the study is to develop a proper tool to analyze the pre-buckling behavior of such beams, since current approaches based on two-dimensional finite element method analysis demand significant computational efforts to be applied to real structures. The numerical results underline the effectiveness of the proposed mechanical model in analyzing case studies of technical interest in Civil Engineering, and the relevant influence of geometrical imperfections on the structural performance of FRP components with regard to serviceability design requirements.

AB - This paper presents a geometrically non-linear one-dimensional model suitable for analyzing thin-walled fiber-reinforced polymer profiles, which accounts for the effect of manufacturing imperfections. The kinematic model is developed under the hypotheses of small strains and moderately large rotations of the cross-sections, and is able to take into consideration the contribution of shear strains and the effects related to warping displacements. The aim of the study is to develop a proper tool to analyze the pre-buckling behavior of such beams, since current approaches based on two-dimensional finite element method analysis demand significant computational efforts to be applied to real structures. The numerical results underline the effectiveness of the proposed mechanical model in analyzing case studies of technical interest in Civil Engineering, and the relevant influence of geometrical imperfections on the structural performance of FRP components with regard to serviceability design requirements.

KW - B. Buckling

KW - B. Defects

KW - C. Numerical analysis

KW - E. Pultrusion

U2 - 10.1016/j.compositesb.2014.12.014

DO - 10.1016/j.compositesb.2014.12.014

M3 - Article

VL - 72

SP - 206

EP - 212

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

SN - 1359-8368

ER -