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车-桥耦合振动的联合方程分析方法

DOI: 10.3969/j.issn.1674-0696.2013.01.01, PP. 1-4

Keywords: 车桥振动,联立方程,Newmark-β法,vehicles-bridgevibration,simultaneousequations,Newmark-βmethod

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Abstract:

:?根据d’Alembert原理和有限元理论,分别建立了车辆和桥梁的振动方程;基于车辆密贴理论,轮底接触点位移由桥梁节点位移采用形函数插值得到,接触点作用力等效成桥梁单元的结点力代入桥梁振动方程,将车辆、桥梁振动方程组联立形成了车-桥耦合振动的总体振动方程;采用数值积分的Newmark-β法求解方程组。结果表明:此方法和经典的迭代求解方法是吻合的。

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