Hybrid FRP-timber thin-walled Cee section columns under axial compression: Numerical modelling

L. Min, D. Fernando*, B. P. Gilbert, Zhong You

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

This study presents the first ever investigation aimed at accurate numerical modelling of the behavior of hybrid fibre reinforced polymer (FRP)-timber laminated (HFT) Cee section columns under axial compression. Existing numerical modelling approaches for modelling thin-walled structural members, such as modelling using composite laminate shell elements, orthotropic laminate shell elements with experimentally obtained properties, were found to either over-predict or under-predict the stiffness and capacity depending on the approach used. Existing modelling approaches fail to accurately capture the effects of possible interlaminar slips under combined flexural and axial loading. A new modelling approach using ABAQUS subroutine UGENS was proposed incorporating both in-plane stiffness matrix and bending stiffness matrix simultaneously, forming the general section stiffness matrix. Failure initiation criteria and a damage evolution law were incorporated in the subroutine to derive the damaged section stiffness matrix. The predictions from the proposed numerical model showed much improved agreement with the test results.

Original languageEnglish
Article number107029
JournalThin-Walled Structures
Early online date17 Sept 2020
Publication statusPublished - Dec 2020

Keywords / Materials (for Non-textual outputs)

  • Finite element analysis
  • FRP
  • Hybrid FRP-timber columns
  • Local buckling
  • Timber


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