Simulation of High Frequency Vehicle-Track Interactions
Simulation of High Frequency Vehicle-Track Interactions
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DOI：
10.1080/00423119508969616
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发表时间：
1995
影响因子：
3.6
通讯作者：
B. Ripke;K. Knothe
中科院分区：
文献类型：
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作者：
B. Ripke;K. Knothe
本文提出了一种有效的时域方法，用于模拟车辆-轨道垂向相互作用的低频和高频。为了能够调查轨道的局部缺陷（例如，空轨枕）对接触力和载荷以及轨道部件的长期劣化的影响，需要基于有限元的离散轨道模型。开发的轨道模型是非常准确的，能够考虑轨道结构的不规则性和非线性。要考虑的轨枕数量的选择，使轨道的无限延伸可以近似处理。对于短波长（如短节距摩擦或车轮扁疤）引起的激励，必须考虑非线性接触力学。时步积分算法是基于线性子结构的模态分解，因此是绝对稳定的。该方法包括移动质量的影响，是有效的列车速度高达500米/秒。算法的能力是恶魔...
SUMMARY An effective time domain method for simulating the vertical vehicle-track interactions for low and high frequencies is presented. To be able to investigate the effects of local defects of the track (eg voided sleepers) on contact forces and loads and long-term deterioration of track components, a discrete track model based on finite elements is necessary. The track model developed is extremely accurate and is able to consider irregularities and nonlinearities in the track structure. The number of sleepers to be considered is chosen so that the infinite extension of the track can be dealt with approximately. For excitation due to short wavelengths like short pitch corrugation or wheel flats, nonlinear contact mechanics has to be considered. The time-step integration algorithm is based on a modal decomposition of linear substructures and is therefore absolutely stable. The method includes the effects of moving masses and is valid for train speeds up to 500 m/s. The capacity of the algorithm is demon...