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 language | English |
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Article number | 107029 |
Journal | Thin-Walled Structures |
Volume | 157 |
Early online date | 17 Sept 2020 |
DOIs | |
Publication status | Published - Dec 2020 |
Keywords / Materials (for Non-textual outputs)
- Finite element analysis
- FRP
- Hybrid FRP-timber columns
- Local buckling
- Timber