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Lateral-Torsional Instability and Biaxial Bending of Imperfect FRP I-Beams

Author

Listed:
  • Jodi Knorowski

    (WPD Consulting Engineers & Associates, USA.)

  • Stella B. Bondi

    (Naval Sea Systems Command, USA.)

  • Zia Razzaq

    (Old Dominion University, USA.)

Abstract

This paper presents the outcome of a theoretical and experimental study of the behavior of Fiber Reinforced Polymer (FRP) I-beams exposed to lateral-torsional instability or when subjected to biaxial bending. Laboratory experiments involved the application of vertical and horizontal static loads to a 4 x 4 x ¼ in. I-beam with various lengths and the resulting deflections were recorded. Governing biaxial flexure and torsion differential equations were modified to account for the presence of initial imperfections and subsequently solved using a central finite-difference scheme. The theoretical predictions of the beam behavior were found to be in good agreement with what was observed in the laboratory.

Suggested Citation

  • Jodi Knorowski & Stella B. Bondi & Zia Razzaq, 2022. "Lateral-Torsional Instability and Biaxial Bending of Imperfect FRP I-Beams," European Journal of Engineering and Technology Research, European Open Science, vol. 7(6), pages 29-34, October.
    • Handle: RePEc:epw:ejeng0:v:7:y:2022:i:6:id:62687
    DOI: 10.24018/ejeng.2022.7.6.2687
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