点击次数：

发表时间：2022-10-09

发表刊物：振动与冲击

所属单位：运载工程与力学学部

期号：18

页面范围：171-176

ISSN号：1000-3835

摘要：Sloshing impact pressure is a key issue in the structural design of the membrane type Liquefied Nature Gas (LNG)carriers.The parameters of sloshing impact load includes its magnitude,rise time,duration and skewness. Experimental investigation on a large-scaled sloshing model is the most reliable approach to determine impact loads.A series of tests on a 2D rectangular tank subjected to irregular excitations were performed on a hexapod test rig.The experimental results show that due to the interaction between liquid and gas,the peak pressure exhibits large magnitude and short rise time,which might induce large structural dynamic response.The key parameters of sloshing impact load were analyzed by using a statistical method.An idealized triangular impact pressure was introduced as a quantitative long-term irregular excitation to provide a simplified model of the impact load which contains all the essectial parameters of magnitude,rise time,duration and skewness of the impact pressure.This gives a reference to the structural design of LNG tanks.

备注：新增回溯数据