Experimental Study on Vibration Resistance of Thin-film LNG Ship Enclosure System
In ice-breaking LNG carrier sailing,the inevitable collision with floating ice on the water surface or a large area of intact ice will generate ice load,an important factor affecting the safety of LNG carrier,as to which,tests are conducted on the vibration response of the enclosure system of thin-film LNG ship and their results are further calculated.The results show that the impedance level of transmission along the short side of the enclosure system is at most 2.2 dB higher than that of the lower bottom plate,and the impedance level of transmission along the long side of the enclosure system is at most 6.0 dB higher.With the analysis on the vibration level drop of the enclosure system,the average vibration level drop is found to be around 7.5 dB.Considering the availability of reinforced ribs at the bottom of the central box,the vibration level drop of the measurement point is 1～2 dB higher than that of the peripheral box,which demonstrates that the film type enclosure system has good vibration isolation performance.
万方数据
维普
