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Development of design factor predicting the ultimate strength for wide spacing in container curved bilge structures

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Abstract

The aim of the present study is to develop a curvature factor to estimate the ultimate strength and the progressive collapse behaviour of a stiffened curved plate under combined in-plane compression and lateral pressure. Stiffened curved plates are used in various parts of ship and offshore structures, such as bilge structures, columns and the inside structures of offshore semisubmersible rigs. The curvature of a cylindrically curved plate is found to increase the buckling strength and ultimate strength compared with a plate without curvature. Based on the numerical results of a series of nonlinear finite element calculations for all edges with symmetric curved plating with varying parameters such as slenderness ratio, stiffener size, flank angle and amplitude of lateral pressure, an empirical design factor is derived to predict the curvature influence for a fundamental scantling design by rule guidance. The outcomes can be widely referred to in basic designs to decide the required bilge thickness during local scantling.

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Acknowledgements

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2017R1A2B4004891).

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Authors and Affiliations

  1. Central Research Institute, Samsung Heavy Industries Co., Ltd., Geoje, South Korea

    Joo Shin Park

  2. The Korea Ship and Offshore Research Institute, Pusan National University, Busan, South Korea

    Jung Kwan Seo

Authors
  1. Joo Shin Park
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  2. Jung Kwan Seo
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Corresponding author

Correspondence to Jung Kwan Seo.

Appendix

Appendix

See Table 6.

Table 6 Geometric properties of all stiffened panels varying cross section of stiffener
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Park, J.S., Seo, J.K. Development of design factor predicting the ultimate strength for wide spacing in container curved bilge structures. J Mar Sci Technol 24, 526–542 (2019). https://doi.org/10.1007/s00773-018-0572-0

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  • DOI: https://doi.org/10.1007/s00773-018-0572-0

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