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

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Min, L
Fernando, D
Gilbert, BP
You, Zhong
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2020
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Abstract

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.

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Thin-Walled Structures

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157

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Aerospace engineering

Civil engineering

Mechanical engineering

Science & Technology

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Engineering, Civil

Engineering, Mechanical

Mechanics

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Min, L; Fernando, D; Gilbert, BP; You, Z, Hybrid FRP-timber thin-walled Cee section columns under axial compression: Numerical modelling, Thin-Walled Structures, 2020, 157, pp. 107029

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