An Imperfection Sensitivity Analysis on Buckling of Laminated Composite Cylindrical Shells

Cansu Özgen; Vedat Ziya Doğan

doi:10.1109/ICNST52433.2021.9509321

An Imperfection Sensitivity Analysis on Buckling of Laminated Composite Cylindrical Shells

Cansu Özgen^*, Vedat Ziya Doğan

^*Corresponding author for this work

Department of Aeronautical Engineering

Turkish Armed Forces Foundation

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Buckling is an instability problem which occurs under compressive forces on slender structures, and it happens suddenly without warning. Therefore, calculating correct critical buckling load is important for thin walled structures. Including imperfection in the analysis is very important since buckling loads with imperfection are far lower than the buckling loads obtained by assuming that they are perfect. Ignoring the initial imperfections may cause unexpected failures. It is possible to classify the imperfections as geometric, material or loading. Among them, the geometric imperfection has the highest effect on the critical buckling load. In this study, the influence of geometric imperfection on the buckling of axially loaded composite cylindrical structures is investigated. A parametric study is conducted to determine how the imperfection sensitivity can vary with the length to diameter ratio, stacking sequence, and the shape of the imperfection. For this purpose, Finite Element Analyses (FEA) are implemented by using a commercial FEM code, ABAQUS.

Original language	English
Title of host publication	2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	73-76
Number of pages	4
ISBN (Electronic)	9780738112886
DOIs	https://doi.org/10.1109/ICNST52433.2021.9509321
Publication status	Published - 2021
Event	4th IEEE International Conference on Nanoscience and Technology, ICNST 2021 - Virtual, Chengdu, China Duration: 26 Jun 2021 → 28 Jun 2021

Publication series

Name	2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021

Conference

Conference	4th IEEE International Conference on Nanoscience and Technology, ICNST 2021
Country/Territory	China
City	Virtual, Chengdu
Period	26/06/21 → 28/06/21

Bibliographical note

Publisher Copyright:
©2021 IEEE

Keywords

Buckling
composite
Cylinder
Finite element analysis
Imperfection

Access to Document

10.1109/ICNST52433.2021.9509321

Cite this

Özgen, C., & Doğan, V. Z. (2021). An Imperfection Sensitivity Analysis on Buckling of Laminated Composite Cylindrical Shells. In 2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021 (pp. 73-76). (2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICNST52433.2021.9509321

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title = "An Imperfection Sensitivity Analysis on Buckling of Laminated Composite Cylindrical Shells",

abstract = "Buckling is an instability problem which occurs under compressive forces on slender structures, and it happens suddenly without warning. Therefore, calculating correct critical buckling load is important for thin walled structures. Including imperfection in the analysis is very important since buckling loads with imperfection are far lower than the buckling loads obtained by assuming that they are perfect. Ignoring the initial imperfections may cause unexpected failures. It is possible to classify the imperfections as geometric, material or loading. Among them, the geometric imperfection has the highest effect on the critical buckling load. In this study, the influence of geometric imperfection on the buckling of axially loaded composite cylindrical structures is investigated. A parametric study is conducted to determine how the imperfection sensitivity can vary with the length to diameter ratio, stacking sequence, and the shape of the imperfection. For this purpose, Finite Element Analyses (FEA) are implemented by using a commercial FEM code, ABAQUS.",

keywords = "Buckling, composite, Cylinder, Finite element analysis, Imperfection",

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note = "Publisher Copyright: {\textcopyright}2021 IEEE; 4th IEEE International Conference on Nanoscience and Technology, ICNST 2021 ; Conference date: 26-06-2021 Through 28-06-2021",

year = "2021",

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Özgen, C & Doğan, VZ 2021, An Imperfection Sensitivity Analysis on Buckling of Laminated Composite Cylindrical Shells. in 2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021. 2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021, Institute of Electrical and Electronics Engineers Inc., pp. 73-76, 4th IEEE International Conference on Nanoscience and Technology, ICNST 2021, Virtual, Chengdu, China, 26/06/21. https://doi.org/10.1109/ICNST52433.2021.9509321

An Imperfection Sensitivity Analysis on Buckling of Laminated Composite Cylindrical Shells. / Özgen, Cansu; Doğan, Vedat Ziya.
2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021. Institute of Electrical and Electronics Engineers Inc., 2021. p. 73-76 (2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Doğan, Vedat Ziya

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N2 - Buckling is an instability problem which occurs under compressive forces on slender structures, and it happens suddenly without warning. Therefore, calculating correct critical buckling load is important for thin walled structures. Including imperfection in the analysis is very important since buckling loads with imperfection are far lower than the buckling loads obtained by assuming that they are perfect. Ignoring the initial imperfections may cause unexpected failures. It is possible to classify the imperfections as geometric, material or loading. Among them, the geometric imperfection has the highest effect on the critical buckling load. In this study, the influence of geometric imperfection on the buckling of axially loaded composite cylindrical structures is investigated. A parametric study is conducted to determine how the imperfection sensitivity can vary with the length to diameter ratio, stacking sequence, and the shape of the imperfection. For this purpose, Finite Element Analyses (FEA) are implemented by using a commercial FEM code, ABAQUS.

AB - Buckling is an instability problem which occurs under compressive forces on slender structures, and it happens suddenly without warning. Therefore, calculating correct critical buckling load is important for thin walled structures. Including imperfection in the analysis is very important since buckling loads with imperfection are far lower than the buckling loads obtained by assuming that they are perfect. Ignoring the initial imperfections may cause unexpected failures. It is possible to classify the imperfections as geometric, material or loading. Among them, the geometric imperfection has the highest effect on the critical buckling load. In this study, the influence of geometric imperfection on the buckling of axially loaded composite cylindrical structures is investigated. A parametric study is conducted to determine how the imperfection sensitivity can vary with the length to diameter ratio, stacking sequence, and the shape of the imperfection. For this purpose, Finite Element Analyses (FEA) are implemented by using a commercial FEM code, ABAQUS.

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Özgen C, Doğan VZ. An Imperfection Sensitivity Analysis on Buckling of Laminated Composite Cylindrical Shells. In 2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021. Institute of Electrical and Electronics Engineers Inc. 2021. p. 73-76. (2021 IEEE 4th International Conference on Nanoscience and Technology, ICNST 2021). doi: 10.1109/ICNST52433.2021.9509321

An Imperfection Sensitivity Analysis on Buckling of Laminated Composite Cylindrical Shells

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Keywords

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