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Influence of pitting corrosion on the bending capacity of thin-walled circular tubes

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Abstract

Thin-walled circular tubes (TWCTs) have been extensively used in space lattice structures and other industrial areas. Corrosion is inevitable for steel structures with regard to its service life, and it will remarkably reduce the loading capacity and critically threaten the structural safety. The present work aims to investigate the influence of pitting corrosion on the bending capacity of TWCT. A series of nonlinear numerical analyses was conducted to investigate the influences of corrosion pit shape, specification, corrosion thickness, diameter, and thickness of TWCT on bending capacity. Corrosion was simulated by reducing the thickness of shell element. Random corrosion distribution was generated, and its influence on bending capacity was estimated. The method for generating a random corrosion would provide a reference for the analysis of other structures with corrosion.

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Acknowledgements

This work was financially supported by the project funded by China Postdoctoral Science Foundation (Grant No. 2017M621156) and the State Key Research Development Program of China (Grant Nos. 2016YFC0801404, 2016YFC0600704).

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Authors and Affiliations

  1. School of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China

    Zhongwei Zhao, Haiqing Liu & Xiufeng Wu

  2. School of Mechanics and Engineering, Liaoning Technical University, Fuxin, 123000, China

    Bing Liang

Authors
  1. Zhongwei Zhao
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  2. Bing Liang
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  3. Haiqing Liu
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  4. Xiufeng Wu
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Correspondence to Zhongwei Zhao.

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Technical Editor: Paulo de Tarso Rocha de Mendonça, Ph.D..

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Zhao, Z., Liang, B., Liu, H. et al. Influence of pitting corrosion on the bending capacity of thin-walled circular tubes. J Braz. Soc. Mech. Sci. Eng. 40, 548 (2018). https://doi.org/10.1007/s40430-018-1475-z

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  • DOI: https://doi.org/10.1007/s40430-018-1475-z

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