16. An Analysis for Fatigue Failure of Ship Structural Members

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概要

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• This paper presents a method to estimate an actual stress in ship structural members and proposes an allowable stress for fatigue strength of the members. The method for evaluation of the stress was developed by fatigue strength analysis for the following conditions, that is, period of service years, crack length and stress concentration factor of the crack initiated member etc. Equations for the allowable stress under various environmental condition (in air and in sea water) were proposed, using ordinary S-N_c curve (N_c; crack initiation life) of notched specimens. S-N_p curve (N_p; crack propagation life) of cracked specimens, modified Miner rule for both of crack initiation and propagation and assumed exponential distribution for wave bending stress history. These equations can be applied not only to the crack initiation life but also to the clack propagation life for any limited service period of ship.

• 社団法人日本船舶海洋工学会の論文

著者

• FUJIMOTO Yukio

  Hiroshima University

• Tomita Yasumitsu

  Osaka University

関連論文

• 13. Studies on the Evaluation of Corrosion Fatigue Crack Initiation Life on Notched Steel Plate
• 10. Thickness and Effect of Fatigue Strength in As-Welded and Post-Weld-Treated Steel Joints
• 16. An Analysis for Fatigue Failure of Ship Structural Members
• 13. Method for Estimating Fatigue Strength Diagram under Random Loading Conditions

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