Fatigue Life Analysis Methods for Pump Tower of  Liquefied Natural Gas Carrier under Sloshing Load

Abstract

Abstract: This paper mainly researched on the pump tower structure fatigue life under sloshing loads in liquefied natural gas carrier. The motion of the hull is calculated using the dynamic load method. Based on the seakeeping results, the critical sloshing movement of the ship is selected according to ABS rules. The sloshing load is obtained using Morison formula based on the results of velocity and acceleration calculated by 2D sloshing program. Fatigue life of the pump tower is predicted using cumulative fatigue damage theory and the relation of fatigue damage degree to loading level is concluded.

Key words: liquefied natural gas carrier, pump tower, sloshing load, fatigue life

CLC Number:

U 663

ZHANG Ai-Qing, XUE Hong-Xiang, TANG Wen-Yong. Fatigue Life Analysis Methods for Pump Tower of Liquefied Natural Gas Carrier under Sloshing Load[J]. Journal of Shanghai Jiaotong University, 2012, 46(03): 363-367.

References

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Fatigue Life Analysis Methods for Pump Tower of Liquefied Natural Gas Carrier under Sloshing Load

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