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Contact Detection Approach Between Wheel and Rail Surfaces

机译:轨道桥墩之间的接触检测方法

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This work presents a general formulation to identify the contact points for the interaction between wheels and rails in the context of railway dynamics simulations. This formulation treats the wheel and rail as parametric surfaces and searches the contact between each wheel strip and the rail independently to avoid the numerical difficulties due to the wheel concave zone. This methodology assumes the rail as locally straight and takes advantage that its potential contacting surface is always convex. For the evaluation of contact forces, two Hertzian-based models are employed for normal and creep forces. A trailer vehicle running on a curved track is used to demonstrate the effectiveness of this methodology.
机译:这项工作呈现了一般的制剂,以确定铁路动力学模拟中车轮和轨道之间相互作用的接触点。 该配方将车轮和轨道作为参数表面处理,并且独立地搜索每个轮条和轨道之间的接触,以避免由于车轮凹槽引起的数值困难。 该方法假设导轨局部直线,并利用其潜在的接触表面总是凸出的。 对于接触力的评估,用于正常和蠕变力的基于赫兹的基础模型。 在弯曲轨道上运行的拖车车辆用于展示该方法的有效性。

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