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Experimental study on the dynamic response of a 3-D wedge under asymmetric impact

  • Special Column on the 12th International Workshop on Ship and Marine Hydrodynamics (IWSH 2023) (Guest Editor De-Cheng Wan)
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Abstract

Water entry problems represent complex multiphase flows involving air, water, and structure interaction, occurring rapidly in rough seas, and potentially effecting structural integrity of floating structures. This paper experimentally investigates asymmetric slamming loads acting on a 3-D elastic wedge section. The specimen, featuring two different bottom plates (stiffened and unstiffened), each 4 mm thick, aims to assess the effect of structural stiffness on dynamic loads. The experiments are conducted at different drop heights of 25 cm and 50 cm and varying heel angles from 5° to 25°. The paper describes the experimental conditions, including wedge geometry, material properties, and the test plan. The study explores the influence of heel angle on impact acceleration, revealing an increase in peak acceleration with a higher inclination angle, particularly in the vertical direction. Additionally, the hydrodynamic pressure resulting from asymmetric slamming is presented. The pressure results analyzed and compared at different locations along the length of the wedge. The experimental findings indicate that, despite the leeward side (stiffened) experiencing a smaller hydrodynamic load, the heel angle significantly affects pressure results on the windward side (unstiffened), leading to a more pronounced dynamic response. The time history of pressure results emphasizes the effect of elastic vibrations, particularly noticeable on the unstiffened bottom plate. This study contributes to a deeper understanding of asymmetric slamming on aluminum structures, facilitating the enhancement of mathematical models and the validation of numerical simulations.

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Acknowledgements

This work was supported by the Estonian Research Council (Grant No. PRG1820). The authors would also like to thank the staff of the Marine Technology Competence Center at Tallinn University of Technology (TALTECH MARTE) for their valuable support of the experimental study.

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Authors and Affiliations

  1. Maritime Engineering Research Group, School of Engineering, University of Southampton, Southampton, UK

    Saeed Hosseinzadeh

  2. Department of Civil Engineering and Architecture, Tallinn University of Technology, Tallinn, Estonia

    Saeed Hosseinzadeh & Kristjan Tabri

  3. Marine Technology Competence Center, Tallinn University of Technology, Kuressaare, Estonia

    Kristjan Tabri

Authors
  1. Saeed Hosseinzadeh
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  2. Kristjan Tabri
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Correspondence to Saeed Hosseinzadeh.

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Conflict of interest: The authors declare that they have no conflict of interest. All authors declare that there are no other competing interests.

Ethical approval: This article does not contain any studies with human participants or animals performed by any of the authors.

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Additional information

Biography: Saeed Hosseinzadeh (1990-), Male, Ph. D.

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Hosseinzadeh, S., Tabri, K. Experimental study on the dynamic response of a 3-D wedge under asymmetric impact. J Hydrodyn 36, 263–274 (2024). https://doi.org/10.1007/s42241-024-0023-9

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  • DOI: https://doi.org/10.1007/s42241-024-0023-9

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