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Publishing Language: Chinese

Research on Smith's method of hull girder ultimate strength based on elastic shakedown limit state

Zemin CHEN1, Huwei CUI1,2,3( ), Qiyin DING4, Runwen Hu1
School of Shipping and Naval Architecture, Chongqing Jiaotong University, Chongqing 400074, China
Hubei Key Laboratory of Inland Shipping Technology, Wuhan 430063, China
Chongqing High-tech Development and Construction Investiment Group Co., Ltd., Chongqing 401329, China
China Railway 15th Bureau 3rd Engineering Co., Ltd., Chengdu 610079, China
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Abstract

Objective

To accurately assess the ultimate strength of a hull girder, this study analyzes the elastic shakedown characteristics of hull stiffeners under cyclic loading.

Methods

Based on the results of nonlinear finite element numerical simulation, the average stress-average strain relationship of the stiffened plate element in Rahman's Beam-Column Method is corrected with full consideration of the elastic shakedown state, type of stiffened plate, and failure mode. A correction method applicable to the average stress-average strain relationship of the stiffened plate in the elastic shakedown limit state is proposed, and a program for Smith’s method for the ultimate strength of hull girders based on the elastic shakedown limit state is compiled and compared with the results of nonlinear finite element numerical simulation.

Result

The results show that the proposed method can effectively evaluate the ultimate strength of a hull girder in the elastic shakedown limit state with greater efficiency than the nonlinear finite element method.

Conclusion

The application of Smith’s method for the ultimate strength of hull girders based on the elastic shakedown limit state can contribute to the accurate and efficient evaluation of the ultimate strength of hull girders.

Keywords

hull girdersultimate strengthSmith's methodelastic shakedowncyclic load
CLC number: U661.43 Document code: A

References

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Chinese Journal of Ship Research
Volume 20 Issue 2,
April 2025
Pages 256-265
DOI: 10.19693/j.issn.1673-3185.03486

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CHEN Z, CUI H, DING Q, et al. Research on Smith's method of hull girder ultimate strength based on elastic shakedown limit state. Chinese Journal of Ship Research, 2025, 20(2): 256-265. https://doi.org/10.19693/j.issn.1673-3185.03486

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Received: 01 August 2023
Revised: 15 September 2023
Published: 03 December 2024
© 2025 Chinese Journal of Ship Research.