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Chinese Journal of Ship Research, Volume. 16, Issue 5, 189(2021)

Fatigue strength analysis of aluminum alloy trimaran considering corrosion effects

Chenyan ZHOU1, Jianing ZHANG2, lin CHEN1, and qiao MENG1
Author Affiliations
  • 1School of Electrical and Energy Engineering, Nantong institute of Technology, Nantong 226002, China
  • 2Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116026, China
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    AbstractGet PDF(in Chinese)
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    Objective

    This study evaluates the fatigue strength of an aluminum alloy trimaran in a corrosive environment.

    Method

    Taking a 120 m aluminum alloy trimaran as an example, the direct calculation method/spectral analysis method is used to calculate its fatigue life based on Miner's linear cumulative damage theory. At the same time, four types of corrosion model are established to compare the hot spot fatigue strength calculation results under different corrosion models and explore the effects of corrosion on the fatigue life of the trimaran.

    Results

    The results show that the new corrosion model is closer to the actual corrosion process. The effects of different corrosion models on the hot spots of the aluminum alloy trimaran are related to corrosion years, and the fatigue strength of the connection between the cross-deck and the main and side bodies is strong.

    Conclusion

    The results of this study have reference significance for the fatigue assessment of trimarans in corrosive environments.

    Keywords
    aluminum alloy trimarancorrosion fatigue resistancecorrosion modelspectral analysis
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    Chenyan ZHOU, Jianing ZHANG, lin CHEN, qiao MENG. Fatigue strength analysis of aluminum alloy trimaran considering corrosion effects[J]. Chinese Journal of Ship Research, 2021, 16(5): 189

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    Paper Information

    Category: Ship Structure and Fittings

    Received: Aug. 12, 2020

    Accepted: --

    Published Online: Mar. 28, 2025

    The Author Email:

    DOI:10.19693/j.issn.1673-3185.02070

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology