A parametric study on effects of pitting corrosion on stiffened panels’ ultimate strength
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Pitting corrosion commonly shaped in hull structure due to marine corrosive environment seriously causes the deterioration of structural performance. This paper deals with the ultimate strength behaviors of stiffened ship panels damaged by the pits subjected to uniaxial compression. A series of no-linear finite element analyses are carried out for three stiffened panels using ABAQUS software. Influences of the investigated typical parameters of pit degree (DOP), depth, location and distribution on the ultimate strength strength are discussed in detail. It is found that the ultimate strength is significantly reduced with increasing the DOP and pit depth and severely affected by the distribution. In addition, the pits including their distributions on the web have a slight effect on the ultimate strength. Compared with regular distribution, random one on the panel result in a change of collapse mode. Finally, an empirical formula as a function of corrosion volume loss is proposed for predicting the ultimate strength of stiffened panel.
Abstract
Pitting corrosion commonly shaped in hull structure due to marine corrosive environment seriously causes the deterioration of structural performance. This paper deals with the ultimate strength behaviors of stiffened ship panels damaged by the pits subjected to uniaxial compression. A series of no-linear finite element analyses are carried out for three stiffened panels using ABAQUS software. Influences of the investigated typical parameters of pit degree (DOP), depth, location and distribution on the ultimate strength strength are discussed in detail. It is found that the ultimate strength is significantly reduced with increasing the DOP and pit depth and severely affected by the distribution. In addition, the pits including their distributions on the web have a slight effect on the ultimate strength. Compared with regular distribution, random one on the panel result in a change of collapse mode. Finally, an empirical formula as a function of corrosion volume loss is proposed for predicting the ultimate strength of stiffened panel.
참고문헌 (19)
- Jinju Cui, "Case studies on the probabilistic characteristics of ultimate strength of stiffened panels with uniform and non-uniform localized corrosion subjected to uniaxial and biaxial thrust", International Journal of Naval Architecture and Ocean Engineering, 11(1), pp.97~118 (2019), 대한조선학회[DOI]
- Daidola, J. C., "Residual Strength Assessment of Pitted Plate Panels", Ship Structure Committee. SSC-394, ~ (1997)
- Dunbar, T. E., "A computational investigation of the effects of localized corrosion on plates and stiffened panels", Mar. Struct, 17, pp.385~402 (2004)
- Huang, Y., "Ultimate strength assessment of hull structural plate with pitting corrosion damnification under biaxial compression", Ocean. Eng, 37(17-18), pp.1503~1512 (2010)
- Nakai, T., "Pitting corrosion-probabilistic modeling and its effect on the ultimate strength of steel plates subjected to uniaxial compression", 10th International Conference on Applications of Statistics and Probabilities in Civil Engineering (2007)
- Nakai, T., "Effect of corrosion on static strength of hull structural members(2nd report)", J. Soc. Nav. Archit. Jpn, 195, pp.221~231 (2004)
- Nakai, T., "Effect of pitting corrosion on local strength of hold frames of bulk carriers(1st report)", Mar. Struct, 17(5), pp.403~432 (2004)
- Ok, D., "Computation of ultimate strength of locally corroded unstiffened plates under uniaxial compression", Mar. Struct, 20(1-2), pp.100~114 (2007)
- Ok, D., "Artificial neural networks and their application to assessment of ultimate strength of plates with pitting corrosion", Ocean. Eng, 34(17-18), pp.2222~2230 (2007)
- Paik, J. K., "Ultimate strength of aging ships", Journal of Engineering for the Maritime Environment, 216(M1), pp.57~77 (2002)
- Paik, J. K., "Ultimate compressive strength of plate elements with pit corrosion wastage", Journal of Engineering for the Maritime Environment, 217(M4), pp.185~200 (2003)
- Paik, J. K., "Time-dependent risk assessment of aging ships accounting for general", pit corrosion, fatigue cracking and local denting damage, 2003, pp.111, 159~197
- Ahmad Rahbar-Ranji, "Ultimate strength of stiffened plates with pitting corrosion", International Journal of Naval Architecture and Ocean Engineering, 7(3), pp.509~525 (2015), 대한조선학회
- Shi, X. H., "Numerical assessment of experiments on the ultimate strength of stiffened panels with pitting corrosion under compression", Thin-Walled Struct, 133, pp.52~70 (2018)
- Silva, J. E., "Ultimate strength assessment of rectangular steel plates subjected to a random localised corrosion degradation", Eng. Struct, 52, pp.295~305 (2013)
- Sultana, S., "Influence of corrosion on the ultimate compressive strength of steel plates and stiffened panels", Thin-Walled Struct, 96, pp.95~104 (2015)
- Wang, R. H., "Experimental and numerical study on ultimate strength of steel tubular members with pitting corrosion damage", Mar. Struct, 64, pp.124~137 (2019)
- Zhang, S., "Buckling and ultimate capability of plates and stiffened panels in axial compression", Mar. Struct, 22(4), pp.791~808 (2009)
- Zhang, J., "Experimental analysis of residual ultimate strength of stiffened panels with pitting corrosion under compression", Thin-Walled Struct, 114, pp.39~51 (2017)