船体部材交差部へのプログラム疲労試験の適用(第2報)

概要

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As the continuation of the last report^<1)>, program fatigue tests were carried out on the structural models of member joints in ship's hull structures. The main purposes of these tests were to estimate the fatigue strength of this part and to find a most effective method of reinforcements therefore.In this investigation we treated the oblique type corner where the tank top plate and the sloping plate of a hopper tank top plate are jointed together in π/4 and/or π/6 angle as is usually found in a bulk carrier.The experimental models were made on a deduced scale, and loads to be applied on the models were determined on the basis of the results of transverse strength calculations and the load program consisted of 2 mean loads, one corresponding to full-load condition and the other corresfonding to ballast condition, each with fluctuating loads of 5 stages.On the analysis, in addition to the consideration on the experimental data, we are also planning to carry out some preliminary calculation based on the fracture mechanics.
社団法人日本船舶海洋工学会の論文