Numerical and experimental studies of the influence of curing and residual stresses on buckling in thin-walled, CFRP square-section profiles

Paweł Czapski; Patryk Jakubczak; Alexander J.G. Lunt; Filip Kaźmierczyk; Mariusz Urbaniak; Tomasz Kubiak

doi:10.1016/j.compstruct.2021.114411

Numerical and experimental studies of the influence of curing and residual stresses on buckling in thin-walled, CFRP square-section profiles

Paweł Czapski, Patryk Jakubczak, Alexander J.G. Lunt, Filip Kaźmierczyk, Mariusz Urbaniak, Tomasz Kubiak

Lodz University of Technology

Research output: Contribution to journal › Article › peer-review

10 Citations (SciVal)

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
Article number	114411
Pages (from-to)	114411
Number of pages	1
Journal	Composite Structures
Volume	275
DOIs	https://doi.org/10.1016/j.compstruct.2021.114411
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

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10.1016/j.compstruct.2021.114411Licence: CC BY

https://www.sciencedirect.com/science/article/pii/S0263822321008734

Cite this

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title = "Numerical and experimental studies of the influence of curing and residual stresses on buckling in thin-walled, CFRP square-section profiles",

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{\textregistered} 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 (",

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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: {\textcopyright} 2021 The Author(s)",

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AU - Lunt, Alexander J.G.

AU - Kaźmierczyk, Filip

AU - Urbaniak, Mariusz

AU - Kubiak, Tomasz

N1 - 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)

PY - 2021/11/1

Y1 - 2021/11/1

N2 - 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 (

AB - 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 (

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KW - Residual stresses

KW - Thermal expansion

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Numerical and experimental studies of the influence of curing and residual stresses on buckling in thin-walled, CFRP square-section profiles

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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