| 移动坐标有限元法在移动荷载稳态问题中的应用 |
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| 引用本文： | 翟伟,宋二祥.移动坐标有限元法在移动荷载稳态问题中的应用[J].铁道科学与工程学报,2007,4(2):6-12. |
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| 作者姓名： | 翟伟 宋二祥 |
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| 作者单位： | 清华大学,土木工程系,北京,100084;清华大学,土木工程系,北京,100084 |
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| 摘 要： | 针对移动荷载引起地基振动问题的特点,建立移动坐标有限元法,求解Kelvin粘弹性地基上Euler-Bernoulli梁在不同速度移动荷载作用下的稳态反应。应用有限单元模拟无限长梁,分析移动坐标下边界条件的具体形式。求解的稳态反应结果与解析法计算结果可以较好地符合,表明移动坐标有限元法可以有效的分析此类问题。
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| 关 键 词： | 移动坐标有限元法 移动荷载 稳态反应 |
| 文章编号： | 1672-7029（2007）02-0006-07 |
| 修稿时间： | 2006-11-18 |
Finite element method in moving coordinate for steady state analysis of moving loads |
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| ZHAI Wei,SONG Er-xiang.Finite element method in moving coordinate for steady state analysis of moving loads[J].Journal of Railway Science and Engineering,2007,4(2):6-12. |
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| Authors: | ZHAI Wei SONG Er-xiang |
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| Institution: | Department of Civil Engineering, Tinghua University, Beijing 100084, China |
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| Abstract: | Finite element method in moving coordinate was formulated to solve the problem that a concentrating load moves uniformly along an infinite Euler-Bernoulli beam supported by a linear elastic Kelvin foundation with linear viscous damping.The beam was modeled with finite elements,and the boundary conditions in the moving coordinate were derived.The steady state numerical results agree well with those of the analytical solutions,which shows that the proposed method is effective in solving moving loads problems. |
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| Keywords: | moving finite element method moving load steady state analysis |
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