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10.3390/jmse13112179
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Article

Experimental and Numerical Investigation of the Structural Behavior of Steel Cylindrical Shells Under Lateral Load Considering Fixed and Frictional Boundary Conditions

by
Won Seok Choi
1,
Jung Min Sohn
2,* and
Sang Jin Kim
3,*
1
Department of Marine Design Convergence Engineering, Pukyong National University, Busan 48513, Republic of Korea
2
Department of Naval Architecture and Marine Systems Engineering, Pukyong National University, Busan 48513, Republic of Korea
3
Department of Marine Environment and Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
*
Authors to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2025, 13(11), 2179; https://doi.org/10.3390/jmse13112179
Submission received: 13 October 2025 / Revised: 7 November 2025 / Accepted: 12 November 2025 / Published: 17 November 2025
(This article belongs to the Topic Advancements and Challenges in Marine Renewable Energy and Marine Structures)
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Abstract

Wind turbine tower structures composed of slender steel cylindrical shells mainly serve as primary load-bearing components and can be particularly susceptible to buckling due to their thin walls. Ensuring the structural safety of wind turbines therefore requires a clear understanding of the behavior of slender cylindrical shells, which is influenced by material properties, boundary conditions, and loading scenarios. This study experimentally investigates the structural responses of scaled cylindrical structures representing wind turbine towers beyond the proportional limit including the ultimate and post-ultimate strength depending on boundary conditions (fully and frictionally supported). Lateral loads were applied at the top of the specimens to simulate concentrated loads transferred from wind forces on the blades. Furthermore, a numerical model was developed to analyze the structural behavior of the tower validated against the experimental test results. The results provide valuable insights into optimizing the structural design of both onshore and offshore wind turbine towers, contributing to enhanced safety and performance under varying load conditions.
Keywords: wind turbine tower (slender cylindrical shell); ultimate and post-buckling behavior; boundary conditions (fully and frictionally supported); experimental test; wind (lateral) loads; finite element analysis wind turbine tower (slender cylindrical shell); ultimate and post-buckling behavior; boundary conditions (fully and frictionally supported); experimental test; wind (lateral) loads; finite element analysis

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MDPI and ACS Style

Choi, W.S.; Sohn, J.M.; Kim, S.J. Experimental and Numerical Investigation of the Structural Behavior of Steel Cylindrical Shells Under Lateral Load Considering Fixed and Frictional Boundary Conditions. J. Mar. Sci. Eng. 2025, 13, 2179. https://doi.org/10.3390/jmse13112179

AMA Style

Choi WS, Sohn JM, Kim SJ. Experimental and Numerical Investigation of the Structural Behavior of Steel Cylindrical Shells Under Lateral Load Considering Fixed and Frictional Boundary Conditions. Journal of Marine Science and Engineering. 2025; 13(11):2179. https://doi.org/10.3390/jmse13112179

Chicago/Turabian Style

Choi, Won Seok, Jung Min Sohn, and Sang Jin Kim. 2025. "Experimental and Numerical Investigation of the Structural Behavior of Steel Cylindrical Shells Under Lateral Load Considering Fixed and Frictional Boundary Conditions" Journal of Marine Science and Engineering 13, no. 11: 2179. https://doi.org/10.3390/jmse13112179

APA Style

Choi, W. S., Sohn, J. M., & Kim, S. J. (2025). Experimental and Numerical Investigation of the Structural Behavior of Steel Cylindrical Shells Under Lateral Load Considering Fixed and Frictional Boundary Conditions. Journal of Marine Science and Engineering, 13(11), 2179. https://doi.org/10.3390/jmse13112179

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