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Publishing Language: Chinese

Hull stiffened plate ultimate strength prediction formula based on elastic shakedown limit state under in-plane cyclic loading

Huwei CUI1,2,3( ), Zemin CHEN1, Qiyin DING1, 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
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Abstract

Objectives

In order to accurately assess the ultimate load-bearing capacity of a hull structure under cyclic loading, it is necessary to consider the effects of the cyclic properties of the load on the ultimate strength of hull stiffened plates.

Methods

Finite element software ANSYS is used to carry out the numerical simulation of ultimate strength based on the elastic shakedown limit state under in-plane cyclic loading for 200 T-bar stiffened plates and flat-bar stiffened plates. The material Bauschinger effect, welding initial deformation and residual stresses of the hull stiffened plates under in-plane cyclic loading are considered in detail. Based on the stiffened plate nonlinear finite element numerical simulation results of the elastic shakedown limit state, the dimensionless ultimate strength of the stiffened plates is taken as the objective function, the flexibility coefficients of the plates and stiffeners are taken as the independent variables, and a formula for predicting the ultimate strength of hull stiffened plates under in-plane cyclic loading based on the elastic shakedown limit state is proposed.

Results

The accuracy of the formula is verified through comparison with the nonlinear finite element simulation results.

Conclusions

This study has positive theoretical and engineering significance for the ultimate strength assessment of hull stiffened plates under cyclic loading.

Keywords

in-plane cyclic loadingelastic shakedownhull stiffened platesultimate strength
CLC number: U661.43 Document code: A

References

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Chinese Journal of Ship Research
Volume 19 Issue 5,
October 2024
Pages 114-121
DOI: 10.19693/j.issn.1673-3185.03380

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Cite this article:
CUI H, CHEN Z, DING Q, et al. Hull stiffened plate ultimate strength prediction formula based on elastic shakedown limit state under in-plane cyclic loading. Chinese Journal of Ship Research, 2024, 19(5): 114-121. https://doi.org/10.19693/j.issn.1673-3185.03380

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Received: 26 May 2023
Revised: 12 July 2023
Published: 16 April 2024
© 2024 Chinese Journal of Ship Research.