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The research was conducted under project No. 2021/05/X/ST8/00396 financed
by the National Science Centre, Poland. Special acknowledgements are due to
Professor Andrzej Teter from Lublin University of Technology for scientific support
and valuable discussions.
The aim of this study was to determine how the change of glass laminate fibres to flax fibres will affect the stability of thin-walled angle columns. Numerical analyses were conducted by the finite element method. Short L-shaped columns with different
configurations of reinforcing fibres and geometric parameters were tested. The axially compressed structures were simply supported on both ends. The lowest two bifurcation loads and their corresponding eigenmodes were determined. Several configurations
of unidirectional fibre arrangement were tested. Moreover, the influence of a flange
width change by100% and a column length change by 33% on the bifurcation
load of the compressed structure was determined. It was found that glass laminate
could be successfully replaced with a bio-laminate with flax fibres. Similar results
were obtained for both materials. For the same configuration of fibre arrangement, the
flax laminate showed a lower sensitivity to the change in flange width than the glass
material. However, the flax laminate column showed a greater sensitivity to changes
in length than the glass laminate one. In a follow-up study, selected configurations
will be tested experimentally.
