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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >Time Domain Analysis of a Railway Vehicle Running on a Discretely Supported Continuous Rail Model at a Constant Velocity
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Time Domain Analysis of a Railway Vehicle Running on a Discretely Supported Continuous Rail Model at a Constant Velocity

机译:在等速离散支撑连续轨道模型上运行的铁路车辆的时域分析

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摘要

In our investigation the track is considered as a system consisting of a continuous elastic beam connected with discrete masses modelling the sleepers. The latters are supported by elastic and damped connections representing the stationary fundament. This model has a closed-form solution in case of the action of positionally fixed vertical forces. In order to obtain an explicit solution under moving loads, a discrete model is built up, which allows us to treat a complex exponential force moving on the track at a constant velocity. The goal of the investigations is to work out a computational method and a computer algorithm for analyzing and comparing the dynamical models and processes mentioned above. The method to be introduced makes it possible to investigate the longitudinally inhomogeneous vertical stiffness and damping of the track-supports and the influence of that effect on the track/vehicle dynamics. The investigations are supplemented by numerical results computed by using realistic track/vehicle data.
机译:在我们的研究中,轨道被认为是由连续的弹性梁与离散的质量组成的系统,这些质量对轨枕建模。后者由代表固定基础的弹性和阻尼连接支撑。该模型在位置固定的垂直力作用下具有封闭形式的解决方案。为了获得在移动载荷下的显式解,建立了一个离散模型,该模型允许我们处理以恒定速度在轨道上移动的复指数力。研究的目的是制定一种用于分析和比较上述动力学模型和过程的计算方法和计算机算法。所介绍的方法可以研究纵向不均匀的垂直刚度和履带支座的阻尼以及该效应对履带/车辆动力学的影响。通过使用真实的轨道/车辆数据计算出的数值结果来补充调查。

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