Design Loads Used for Direct Strength Assessment of Merchant Ship Structures

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概要

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• This paper summarizes the results of extensive research on the design loads used for strength assessment of various merchant ship structures such as tankers, bulk carriers, and container ships. The main aim of the research was to develop practical methods for estimating design loads acting on primary structural members of tankers, bulk carriers, and container ships based on rational technical backgrounds. In this study: 1) Design sea states that closely resemble the actual sea states which are considered as being the most severe for hull structures are proposed. 2) Practical methods for estimating the design sea states are proposed based on parametric studies using the results of series calculations on representative merchant ships. 3) Practical methods for estimating design regular waves that result in the same level of stresses as that induced in irregular waves under design sea states are proposed. 4) Practical methods for estimating design loads such as ship motions, accelerations, hull-girder bending moments, and hydrodynamic pressures that are induced under design regular wave conditions are briefly introduced. The findings in this study have been summarized and implemented in new design standards for tanker, bulk carrier, and container ship structures (Guidelines for Tanker Structures, 2001, Nippon Kaiji Kyokai; Guidelines for Bulk Carrier Structures, 2002, Nippon Kaki Kyokai; and Guidelines for container Carrier Structures, 2003, Nippon Kaiji Kyokai).

• 財団法人日本海事協会の論文

著者

• Shigemi Toshiyuki

  Research Institute

• Zhu Tingyao

  Research Institute

関連論文

• A Study on the Hull Girder Torsional Strength Assessment of Container Ship Structures
• Comprehensive Studies on the Wave Load Analysis and Structural Strength Assessment of Container Ships
• A Consideration of Wave-Induced Loads for Direct Strength Calculation under Extreme Waves(Part1,Strength Assessment of Double Hull Tankers)
• Research on the Ultimate Strength of Large-scale Structures
• An Efficient Approximate Numerical Method of Hydrodynamic Forces Acting on a Very Large Floating Structure
• On the Estimation of Wave-Induced Loads Acting on Practical Merchant Ships by a Rankine Source Method(Part1,Strength Assessment of Double Hull Tankers)
• Design Loads used for Strength Assessment of Tankers(Part1,Strength Assessment of Double Hull Tankers)
• Design Loads Used for Direct Strength Assessment of Merchant Ship Structures
• Structural Safety of Ships

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