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The superstructure, which is not so long in comparison with the main hull structure, does not deflect in the same way as the main hull does, since the longitudinal stress of the main hull is not completely transmitted to the superstructure. In contrast, when the length of the superstructure is large enough, the longitudinal stress is fully transferred from the main hull to the superstructure, since the superstructure will act as part of the hull girder in absorbing hull girder bending. The latter case is important for the strength of a superstructure because the longitudinal bending stress flowing into the superstructure may cause structural damage. In this chapter, the strength of a vessel with a long superstructure is mainly discussed.

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Superstructure

  • 章节

  • 发表日期：

    2026年

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  • Yasuhisa Okumoto,
  • Tetsuo Okada,
  • Yu Takeda,
  • Masaki Mano,
  • Masanobu Toyoda

摘要

The superstructure, which is not so long in comparison with the main hull structure, does not deflect in the same way as the main hull does, since the longitudinal stress of the main hull is not completely transmitted to the superstructure. In contrast, when the length of the superstructure is large enough, the longitudinal stress is fully transferred from the main hull to the superstructure, since the superstructure will act as part of the hull girder in absorbing hull girder bending. The latter case is important for the strength of a superstructure because the longitudinal bending stress flowing into the superstructure may cause structural damage. In this chapter, the strength of a vessel with a long superstructure is mainly discussed.