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Volume 13
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10.3390/jmse13020350
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Article

Reconstruction of Multi-Load Strain Field of Ship Stiffened Plate Based on iFEM and Analysis of Influencing Factors of Reconstruction Accuracy

by
Guocai Chen
2,3,
Xueliang Wang
1,2,3,*,
Quanhua Zhu
2,3,
Huawei Yang
2,3,
Zhentao Jiang
2,3,
Hao Xu
2,3,
Mengdan Sun
2,3,
Wei Chen
2,3,
Haozheng Chen
2,3,
Tao Zhang
2,3 and
Zheng Zhang
4
1
Taihu Laboratory of Deepsea Technological Science, Wuxi 214082, China
2
China Ship Scientific Research Center, Wuxi 214082, China
3
National Key Laboratory of Ship Structural Safety, Wuxi 214082, China
4
Green & Smart River-Sea-Going Ship, Cruise and Yacht Research Center, Wuhan University of Technology, Wuhan 430063, China
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2025, 13(2), 350; https://doi.org/10.3390/jmse13020350
Submission received: 31 December 2024 / Revised: 29 January 2025 / Accepted: 11 February 2025 / Published: 14 February 2025
(This article belongs to the Special Issue Monitoring and Evaluation of Marine Engineering Equipment and Structures)
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Abstract

This study utilizes the inverse finite element method (iFEM) to investigate the strain field reconstruction of ship stiffened plates under multiple loading conditions. The aim is to enhance the monitoring, safety, and reliability of ship structures through multi-condition strain field reconstruction. By applying iFEM, this research addresses the challenge of reconstructing strain fields from discrete strain measurements using a least-squares variational equation derived from elastic mechanics principles. The performance of iFEM was evaluated under five loading conditions: axial compression, non-uniform loading, torsion, combined axial compression with non-uniform loading, and combined axial compression with symmetric uniform loading. To mitigate boundary effects, an extended stiffened plate design was implemented. The results show significant improvements in reconstruction accuracy: under two specific loading conditions, the precision improved by 38.82% and 11.25%, respectively, compared to the original plate. This study underscores the potential of iFEM in improving the monitoring and safety of marine structures. Future work could explore the applicability of iFEM to other marine structures and scenarios, ensuring broader practical applications.
Keywords: iFEM; ship stiffened plate; multi-load; strain field reconstruction; reconstruction accuracy iFEM; ship stiffened plate; multi-load; strain field reconstruction; reconstruction accuracy

Share and Cite

MDPI and ACS Style

Chen, G.; Wang, X.; Zhu, Q.; Yang, H.; Jiang, Z.; Xu, H.; Sun, M.; Chen, W.; Chen, H.; Zhang, T.; et al. Reconstruction of Multi-Load Strain Field of Ship Stiffened Plate Based on iFEM and Analysis of Influencing Factors of Reconstruction Accuracy. J. Mar. Sci. Eng. 2025, 13, 350. https://doi.org/10.3390/jmse13020350

AMA Style

Chen G, Wang X, Zhu Q, Yang H, Jiang Z, Xu H, Sun M, Chen W, Chen H, Zhang T, et al. Reconstruction of Multi-Load Strain Field of Ship Stiffened Plate Based on iFEM and Analysis of Influencing Factors of Reconstruction Accuracy. Journal of Marine Science and Engineering. 2025; 13(2):350. https://doi.org/10.3390/jmse13020350

Chicago/Turabian Style

Chen, Guocai, Xueliang Wang, Quanhua Zhu, Huawei Yang, Zhentao Jiang, Hao Xu, Mengdan Sun, Wei Chen, Haozheng Chen, Tao Zhang, and et al. 2025. "Reconstruction of Multi-Load Strain Field of Ship Stiffened Plate Based on iFEM and Analysis of Influencing Factors of Reconstruction Accuracy" Journal of Marine Science and Engineering 13, no. 2: 350. https://doi.org/10.3390/jmse13020350

APA Style

Chen, G., Wang, X., Zhu, Q., Yang, H., Jiang, Z., Xu, H., Sun, M., Chen, W., Chen, H., Zhang, T., & Zhang, Z. (2025). Reconstruction of Multi-Load Strain Field of Ship Stiffened Plate Based on iFEM and Analysis of Influencing Factors of Reconstruction Accuracy. Journal of Marine Science and Engineering, 13(2), 350. https://doi.org/10.3390/jmse13020350

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