Structural behavior of large-diameter cylindrical shell with stiffened opening

Sung Yong Kang; Deokhee Won; Jong Sup Park; Young Jong Kang; Seungjun Kim

doi:10.3390/met11091413

Structural behavior of large-diameter cylindrical shell with stiffened opening

Sung Yong Kang, Deokhee Won, Jong Sup Park, Young Jong Kang, Seungjun Kim

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

5 Citations (Scopus)

Abstract

In recent years, there has been a growing demand for renewable energy that is free of power generation by products to address the global climate and resource limitation crises. Wind power generation is maximizing efficiency through constant research and development, and as the use of large capacity turbines increases, the scale of supporting structure also increases. The structural maintenance of hollow towers, the supporting structure of wind turbines, requires the installation of an opening through which workers can access the tower to check corrosion, cracks, and damage to the tower body. However, these access points can affect the buckling strength of the tower structures due to section loss. In this study, the effects of the opening on the structural stability and ultimate strength of a large diameter cylindrical shell, which could be used as a wind turbine supporting tower structure, were studied through elastic buckling and nonlinear analyses. Based on the analytical results, the effects of the thickness of a collar stiffener around the opening on the structure’s ultimate strength were investigated. The results were compared to the design criteria, and through regression analysis, an effective equation to determine the collar stiffener’s thickness for large diameter cylindrical shells was proposed based on an opening that satisfied the design strength criteria.

Original language	English
Article number	1413
Journal	Metals
Volume	11
Issue number	9
DOIs	https://doi.org/10.3390/met11091413
Publication status	Published - 2021 Sept

Bibliographical note

Funding Information:
Funding: This research was funded by the Pohang Iron and Steel Co., Ltd. (POSCO). This research was also funded by the National Research Foundation of Korea (NRF).

Funding Information:
Acknowledgments: This research was conducted by the research project POSCO (Code 2020Z032). This work was also supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. NRF-2021R1A5A1032433).

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Collar stiffener
Geometric and material nonlinear analysis
Large diameter cylindrical shell
Linear buckling analysis
Maintenance opening
Megastructure
Optimal design
Wind turbine tower

ASJC Scopus subject areas

General Materials Science
Metals and Alloys

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.3390/met11091413

Cite this

@article{6c200acc7489479db3b8c1eeadf8f920,

title = "Structural behavior of large-diameter cylindrical shell with stiffened opening",

abstract = "In recent years, there has been a growing demand for renewable energy that is free of power generation by products to address the global climate and resource limitation crises. Wind power generation is maximizing efficiency through constant research and development, and as the use of large capacity turbines increases, the scale of supporting structure also increases. The structural maintenance of hollow towers, the supporting structure of wind turbines, requires the installation of an opening through which workers can access the tower to check corrosion, cracks, and damage to the tower body. However, these access points can affect the buckling strength of the tower structures due to section loss. In this study, the effects of the opening on the structural stability and ultimate strength of a large diameter cylindrical shell, which could be used as a wind turbine supporting tower structure, were studied through elastic buckling and nonlinear analyses. Based on the analytical results, the effects of the thickness of a collar stiffener around the opening on the structure{\textquoteright}s ultimate strength were investigated. The results were compared to the design criteria, and through regression analysis, an effective equation to determine the collar stiffener{\textquoteright}s thickness for large diameter cylindrical shells was proposed based on an opening that satisfied the design strength criteria.",

keywords = "Collar stiffener, Geometric and material nonlinear analysis, Large diameter cylindrical shell, Linear buckling analysis, Maintenance opening, Megastructure, Optimal design, Wind turbine tower",

author = "Kang, {Sung Yong} and Deokhee Won and Park, {Jong Sup} and Kang, {Young Jong} and Seungjun Kim",

note = "Funding Information: Funding: This research was funded by the Pohang Iron and Steel Co., Ltd. (POSCO). This research was also funded by the National Research Foundation of Korea (NRF). Funding Information: Acknowledgments: This research was conducted by the research project POSCO (Code 2020Z032). This work was also supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. NRF-2021R1A5A1032433). Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = sep,

doi = "10.3390/met11091413",

language = "English",

volume = "11",

journal = "Metals",

issn = "2075-4701",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "9",

}

TY - JOUR

T1 - Structural behavior of large-diameter cylindrical shell with stiffened opening

AU - Kang, Sung Yong

AU - Won, Deokhee

AU - Park, Jong Sup

AU - Kang, Young Jong

AU - Kim, Seungjun

N1 - Funding Information: Funding: This research was funded by the Pohang Iron and Steel Co., Ltd. (POSCO). This research was also funded by the National Research Foundation of Korea (NRF). Funding Information: Acknowledgments: This research was conducted by the research project POSCO (Code 2020Z032). This work was also supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. NRF-2021R1A5A1032433). Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/9

Y1 - 2021/9

N2 - In recent years, there has been a growing demand for renewable energy that is free of power generation by products to address the global climate and resource limitation crises. Wind power generation is maximizing efficiency through constant research and development, and as the use of large capacity turbines increases, the scale of supporting structure also increases. The structural maintenance of hollow towers, the supporting structure of wind turbines, requires the installation of an opening through which workers can access the tower to check corrosion, cracks, and damage to the tower body. However, these access points can affect the buckling strength of the tower structures due to section loss. In this study, the effects of the opening on the structural stability and ultimate strength of a large diameter cylindrical shell, which could be used as a wind turbine supporting tower structure, were studied through elastic buckling and nonlinear analyses. Based on the analytical results, the effects of the thickness of a collar stiffener around the opening on the structure’s ultimate strength were investigated. The results were compared to the design criteria, and through regression analysis, an effective equation to determine the collar stiffener’s thickness for large diameter cylindrical shells was proposed based on an opening that satisfied the design strength criteria.

AB - In recent years, there has been a growing demand for renewable energy that is free of power generation by products to address the global climate and resource limitation crises. Wind power generation is maximizing efficiency through constant research and development, and as the use of large capacity turbines increases, the scale of supporting structure also increases. The structural maintenance of hollow towers, the supporting structure of wind turbines, requires the installation of an opening through which workers can access the tower to check corrosion, cracks, and damage to the tower body. However, these access points can affect the buckling strength of the tower structures due to section loss. In this study, the effects of the opening on the structural stability and ultimate strength of a large diameter cylindrical shell, which could be used as a wind turbine supporting tower structure, were studied through elastic buckling and nonlinear analyses. Based on the analytical results, the effects of the thickness of a collar stiffener around the opening on the structure’s ultimate strength were investigated. The results were compared to the design criteria, and through regression analysis, an effective equation to determine the collar stiffener’s thickness for large diameter cylindrical shells was proposed based on an opening that satisfied the design strength criteria.

KW - Collar stiffener

KW - Geometric and material nonlinear analysis

KW - Large diameter cylindrical shell

KW - Linear buckling analysis

KW - Maintenance opening

KW - Megastructure

KW - Optimal design

KW - Wind turbine tower

UR - http://www.scopus.com/inward/record.url?scp=85114323365&partnerID=8YFLogxK

U2 - 10.3390/met11091413

DO - 10.3390/met11091413

M3 - Article

AN - SCOPUS:85114323365

SN - 2075-4701

VL - 11

JO - Metals

JF - Metals

IS - 9

M1 - 1413

ER -

Structural behavior of large-diameter cylindrical shell with stiffened opening

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this