Experimental study on dynamic response of ballast water-tank structure under impact load
In order to accurately evaluate the impact resistance of water tank structures,a device for generating under-water impact loads with adjustable peak and effective duration of impact is proposed,and the experimental studies are con-ducted on two typical wall structures.The experimental results show that there is a linear relationship between the fourth strength stress of the specimen strain and the peak impact load when the stress is below the material yield strength,and as the stress approaches the yield strength,the mean square deviation of the fitted linear formula increases;When the stress ex-ceeds the yield strength of the material,the plastic deformation stress of the test piece is not only related to the peak value of impact load,but also to the waveform of the impact load and the structural shape of the test piece.Compared to planar rein-forced structures,circular reinforced structures have better impact resistance.
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