| 厢式超大型浮体瞬态水弹性响应有限元分析 |
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| 引用本文： | 邱流潮,刘桦. 厢式超大型浮体瞬态水弹性响应有限元分析[J]. 上海交通大学学报, 2007, 41(2): 181-185 |
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| 作者姓名： | 邱流潮 刘桦 |
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| 作者单位： | 中国农业大学,应用力学系,北京,100083;上海交通大学,工程力学系,上海,200030 |
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| 摘 要： | 建立了分析任意动力外荷载作用下超大型浮体瞬态弹性响应的时域有限元方法,并通过已有的试验数据对该方法进行了验证.对浮式跑道在飞机着陆期间的瞬态行为进行了数值仿真分析,其中,飞机在着陆期间产生的外力、飞机的位置以及速度时间历程均采用波音747-400大型喷气式客机的数据进行模拟.计算结果表明:飞机着陆早期其滑行速度超过跑道弹性变形波速,而随着飞机减速直至完全停止后,弹性变形波才超过飞机并与停止的飞机碰撞而使部分弹性波被反射.
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| 关 键 词： | 超大型浮体 浮式机场 水弹性 瞬态响应 时域分析 有限元法 |
| 文章编号： | 1006-2467（2007）02-0181-05 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-03-20 |
The finite Element Analysis of Transient Hydroelastic Response of Pontoon-Type Very Large Floating Structure |
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| QIU Liu-chao,LIU Hua. The finite Element Analysis of Transient Hydroelastic Response of Pontoon-Type Very Large Floating Structure[J]. Journal of Shanghai Jiaotong University, 2007, 41(2): 181-185 |
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| Authors: | QIU Liu-chao LIU Hua |
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| Abstract: | A time domain finite element method(FEM) for analysis of transient elastic response of a very large floating structures(VLFS) subjected to arbitrary time-dependent external loads was presented and the proposed finite element procedure was validated by comparing the numerical results with available experimental data.The transient elastic response of a floating runway during landing and take-off of an airplane is computed by the proposed time domain FEM.The time histories of the applied force and the position and velocity of an airplane during landing and take-off are modeled with the data from a Boeing 747-400 jumbo jet.It is shown that the airplane moves faster than the generated waves in the early stage of landing,and that the waves overtake and are deformed due to the presence of the airplane as the speed of the airplane decreases to zero. |
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| Keywords: | very large floating structures floating airport hydroelasticity transient response time(domain) analysis finite element method |
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