期刊
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
卷 235, 期 10, 页码 1214-1224出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0954409721993626
关键词
Dynamic model; friction coefficient; railway disc brakes; dynamometer; numerical optimization
资金
- KnorrBremse SfS GmbH
Braking forces in passenger trains are generated by disc brake units, with friction forces influenced by various factors such as relative velocity, temperatures, and normal pressure. A mathematical model has been developed to link these variables to the friction coefficient for accurate estimation of braking distances.
Braking forces occurring during emergency brake applications of passenger trains are generated by disc brake units. The acting friction forces depend on the frictional properties between disc and brake pad and are influenced by relative velocity, temperatures and normal pressure of the contacting surfaces. In this work a mathematical model is developed which aims to link these influencing variables to the instantaneous acting friction coefficient in order to include the characteristic behavior of friction forces in the calculation of longitudinal dynamics of railway vehicles. The model is identified by the use of data recorded on a full-scale dynamometer test rig and verified regarding the estimation of the brake distance.
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