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Development of Slender Doubler Plate Hybrid Design System for Ship Structure Subjected to Longitudinal In-plane Compression

종방향 면내 압축하중 하의 세장한 선박 이중판 하이브리드 설계시스템 구축

  • Received : 2013.08.19
  • Accepted : 2014.02.13
  • Published : 2014.02.28

Abstract

In view of the importance of material reduction and rational structural design due to the rapid increase in oil and steel prices, an optimized structural hybrid design system for the doubler plate of a ship's hull structure was developed. A direct design process by a structural designer was added to this developed optimized system to increase the design efficiency and provide a way of directly inserting a designer's decisions into the design system process. As the first step of the doubler design system development, the design formulas used in doubler design system were introduced. Based on the introduction of influence coefficients $K_{t_c}$ $K_{t_d}$, $K_{b_d}$ and $K_{a_d}$ according to the variations in the doubler length, breadth, doubler thickness, and average corrosion thickness of the main plate, the design formulas for an equivalent plate thickness were developed, and a hybrid design system using these formulas was suggested for the slender doubler plate of a ship structure subjected to a longitudinal in-plane compression load. By using this developed design system, a more rational doubler plate design can be expected considering the efficient reinforcement of the plate members of ship structures. Additionally, a more detailed structural analysis through local strength evaluations will be performed to verify the efficiency of the optimum structural design for the doubler plate.

Keywords

Doubler plate design;Structural analysis;Optimum structural design;Hybrid structural design system;In-plane compression;Equivalent plate thickness

References

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Cited by

  1. Development of Ship Plate Member Design System Reinforced by Doubler Plate Subjected to Biaxial In-plane Compressive Load vol.30, pp.4, 2016, https://doi.org/10.5574/KSOE.2016.30.4.294