Abstract
The study provides the first comprehensive experimental and numerical study of thin-walled, carbon fibre square-section columns subjected to static compression. The profiles were manufactured from unidirectional prepreg tape of Hexcel AS4 high-strength carbon fibres in HexPly® 8552 thermoset resin with ply angles [45/−45/45/−45]s. The dimensions of the columns were: (height × width × length) 80 mm × 80 mm × 240 mm and the wall thickness was 0.92 mm. Advanced Finite Element Models (FEM) of the residual stresses generated during production were used as a basis for simulations of static compression. The deformation predicted by these models showed excellent agreement with 3D scans of the columns. These results also highlighted the residual stress concentrations generated at sample corners during production. It was found that the residual stresses from the autoclaving process significantly enhance the buckling load performance (by ~35%) and that the models provide an effective comparison with the experimental results (
Original language | English |
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Article number | 114411 |
Pages (from-to) | 114411 |
Number of pages | 1 |
Journal | Composite Structures |
Volume | 275 |
DOIs | |
Publication status | Published - 1 Nov 2021 |
Bibliographical note
Funding Information:1. This analysis was conducted as part of a National Science Centre Poland research project - reference number: UMO ? 2020/36/T/ST8/00025. 2. This analysis was conducted as part of a Ministry of Science and Higher Education of Poland research project - reference number: Diamond Grant No 0036/DIA/2017/46. 3. This article has been completed while the fourth author (Filip Ka?mierczyk) was the Doctoral Candidate in the Interdisciplinary Doctoral School at the Lodz University of Technology, Poland.
Publisher Copyright:
© 2021 The Author(s)
Keywords
- Buckling
- Carbon fibres
- Finite element modelling
- Residual stresses
- Thermal expansion
ASJC Scopus subject areas
- Ceramics and Composites
- Civil and Structural Engineering