Please READ MORE for the video. Do not think that this is a new type brake, this is sample of wheel flat. If there is a small flattened spot in wheel tread, it will be bigger flat in time due to impacts on its edges...
Track and Rail and Wheel Physics and Rail Agglomeration Area and Moment Arm
Please READ MORE for the video (full secreen is my recommendation) and document. If there was not mass of railway vehicle and gravity, vehicle wheels stand just on rail head level. In fact due to physics, wheel embeds to rail and rail embed to superstructure and superstructur embed to substructure and earth (action-reaction) So, vertical and horizontal forces occur elastical deformation on wheel, rail and structure. As well as static wheel and dinamic...
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