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车桥耦合振动问题的振型叠加法求解

发表时间:2011-01-31  浏览量:2247  下载量:657
全部作者: 杨岳民
作者单位: 中交第一公路勘察设计研究院
摘 要: 详细分析了车桥耦合振动这一时变问题。在建立其耦合振动方程时,对于车辆采用其几何坐标。而对于桥梁结构,由于其振动主要由频率较低的几阶基本振型构成,这里把桥梁振动用若干个低阶主要振型描述,即数学中的特征坐标法。在此基础上建立车桥耦合振动方程,这样就可以大大降低系统自由度,简化计算,还避免了车辆与桥梁之间耦合力的迭代计算,同时具有较高的计算精度。
关 键 词: 土木建筑基础学科;振型叠加法;数值计算;低阶基本振型;简化计算
Title: Mode-superposition solution of coupled vibration between vehicle and bridge
Author: YANG Yuemin
Organization: The First Highway Survey and Design Institute of China
Abstract: The time-varying problem of coupled vibration between vehicle and bridge is analyzed in detail. In the setting up of the vibration equations, geometrical coordinates are adopted for the vehicles. To the bridge structure, it is well known that its vibration is mainly demonstrated by its lower basic vibration modes. If the vibration is presented by its lower basic modes, or the characteristic coordinates in mathematics, and on which the vibration equations of the bridge and the vehicles are set up, then the equations can be greatly simplified by largely reducing the degrees of the freedom, and the iteration between can be avoided. At the same time, a good accuracy can be obtained. That is the objective this paper to achieve.
Key words: basic science of civil engineering; superposition solution of vibration modes; numerical calculation; lower basic vibration modes; simplified calculation
发表期数: 2011年1月第2期
引用格式: 杨岳民. 车桥耦合振动问题的振型叠加法求解[J]. 中国科技论文在线精品论文,2011,4(2):155-160.
 
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