| 大型LNG船液舱晃荡结构动响应研究 |
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| 引用本文： | 滕蓓,祁恩荣,陆晔,陈小平.大型LNG船液舱晃荡结构动响应研究[J].舰船科学技术,2012(4):7-12. |
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| 作者姓名： | 滕蓓 祁恩荣 陆晔 陈小平 |
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| 作者单位： | 1. 江苏省无锡交通高等职业技术学校,江苏无锡,214151
2. 中国船舶科学研究中心,江苏无锡,214082 |
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| 基金项目： | 工信部“十一五”高技术船舶科研基金资助项目 |
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| 摘 要： | 在船舶尺度和营运状态与传统条件发生很大变化的情况下,大型液化天然气(LNG)船液舱晃荡研究显得尤为重要.本文分析了NO96型LNG船液舱围护结构的特点,采用显示积分方法研究不同晃荡压力峰值和持续时间的晃荡冲击载荷作用下液舱围护系统结构动响应,得到不同工况下结构的动态失效特性.最后回归基于比例极限和突变永久变形的临界压力载荷公式,并给出液舱围护系统结构设计准则和安全性评估方法建议.
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| 关 键 词： | 晃荡 动响应 数值模拟 |
Structural dynamic response study of large LNG carriers under sloshing impacts in tanks |
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| TENG Bei
,
QI En-rong
,
LU Ye
,
CHEN Xiao-ping.Structural dynamic response study of large LNG carriers under sloshing impacts in tanks[J].Ship Science and Technology,2012(4):7-12. |
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| Authors: | TENG Bei QI En-rong LU Ye CHEN Xiao-ping |
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| Institution: | 1.Wuxi Institute of Communications Technology,Wuxi214151,China; 2.China Ship Scientific Research Center,Wuxi214082,China) |
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| Abstract: | Tank sloshing study of large liquefied natural gas(LNG)carriers is very important when ship size and working state change vastly.Firstly,characteristic of the NO96 type containment system of large LNG carriers is studied.Then,dynamic responses of containment system under sloshing impact loads with different pressure peak and duration times are studied using explicit method and dynamic failure characteristics at different situation are studied.Finally,critical pressure load formulae are derived based on the proportional limit and the abruptly increasing permanent deflection,suggestions for design criteria and safety evaluation are also given. |
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| Keywords: | sloshing dynamic response numerical simulation |
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