大型LNG船液舱晃荡载荷及响应模型试验研究(英文)  

Experimental Investigation of Sloshing Loads and Structural Dynamic Responses in Tanks of LNG Carriers

作　　者：徐国徽[1] 祁恩荣[1] 徐春[1] 顾学康[1] 

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2011年第12期1374-1383,共10页Journal of Ship Mechanics

摘　　要：液舱晃荡是大型液化天然气船液舱设计中的重要问题之一,具有强非线性和离散性,很难确定其载荷值。为了研究大型液化天然气船液舱晃荡冲击载荷及其对结构的响应,文章开展了典型菱形液舱的三维晃荡模型试验,获得了大型LNG船液舱在各种运动模式下的流体拍击舱壁的冲击载荷特性以及液舱围护系统结构在晃荡冲击载荷作用下的动响应特征。Sloshing in liquid tanks is a significant problem in the structural design of containment system. Since sloshing is a strong nonlinear and highly stochastic phenomenon, it is very difficult to provide a reliable estimation of sloshing pressures.In this paper, sloshing model tests with 1/55 scale membrane-type tank were carried out for regular harmonic motions to investigate various character- istics of impact pressures and structural responses of containment system in tanks of LNG carriers.

关 键 词：大型LNG船 晃荡载荷 模型试验 冲击压力 结构动响应 

分 类 号：U661.4[交通运输工程—船舶及航道工程]