【作者】 祁恩荣； 徐春； 汪雪良； 王德禹； 蔡忠华； 陈小平；

【Author】 QI En-rong1,XU Chun 1,WANG Xue-liang 1,WANG De-yu 2,CAI Zhong-hua 2,CHEN Xiao-ping 1(1 China Ship Scientific Research Center,Wuxi,Jiangsu 214082,China;2 National State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200030,China)

【机构】 中国船舶科学研究中心； 上海交通大学国家重点试验室；

【摘要】 薄膜型LNG船大型化的关键问题之一是严重的液舱晃荡冲击压力以及由此引起的复杂和危险的结构动响应,至今模型试验是研究此类问题的最重要的方法。本文以某大型LNG船尺度较大和运动较剧烈的2号液舱为研究对象设计了精细的三维晃荡试验模型,通过不同载液水平的系列规则和不规则运动激励的晃荡试验研究晃荡冲击压力特性;基于薄膜型液舱围护系统结构性能计算结果,设计四边简支铜板格分析液舱围护系统结构弹性效应;另外,还利用浪高仪测量液舱波面运动情况。以上试验结果可为验证晃荡数值方法和液舱围护系统结构设计提供依据。更多还原

【Abstract】 One of key problems of the upsizing of membrane LNG carriers is serious sloshing impact pressures in tanks and the resulting complicated and dangerous dynamic structural response,as yet model test is the most important method for studying this kind of problem.A fine three dimensional test model is designed according to No. 2 tank of a large LNG carrier with large size and violent movement and the characteristic of sloshing impact pressures is studied through series sloshing test under excitation of regular and irregular movement with different filling levels.Based on calculation results of the structural characteristic of membrane LNG containment systems,copper panels with four edges simply supported are designed to analyze the elastic effect of containment systems. Otherwise,wave movement is also measured using wave height meter.The above test results can be used to provide a basis for verifying sloshing numerical method and structural design of containment systems.更多还原