A method for calculating the dynamic envelope of railway vehicles
A dynamic envelope and railway vehicle technology, applied in the field of rail transit, can solve the problem of not considering the impact of track structure vibration on the dynamic envelope of the vehicle, the inability to accurately reflect the maximum contour of the dynamic envelope of the vehicle, and affecting the dynamic envelope of the vehicle and other issues, to achieve reasonable calculation results and enrich the research content
Inactive Publication Date: 2017-07-04
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
More importantly, as the running speed increases and the traction weight increases, the impact of track structure vibration on vehicle vibration becomes more and more obvious, which in turn affects the vehicle dynamic envelope. The influence of track structure vibration on the dynamic envelope of the vehicle is not considered, and the obtained dynamic envelope cannot objectively reflect the actual situation
In addition, when the above method calculates the dynamic envelope, it does not conduct statistical analysis on the dynamic displacement of different sections of the vehicle body, and cannot accurately reflect the maximum profile of the entire vehicle dynamic envelope
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[0027] A specific embodiment of the present invention is: a method for calculating the dynamic envelope of a railway vehicle, the method comprising:
[0028] Step S1, set a design section at the center of mass of the car body, arrange a number of observation points on the contour line of the design section, sort them, and record the original coordinate values of each observation point; Table 1 lists the The horizontal and vertical original coordinate values of each observation point on the design cross-section contour line of the vehicle body, and figure 2 The specific position of each observation point on the design section contour line is marked in .
[0029] Table 1 The horizontal and vertical original coordinate values of each observation point on the contour line of the car body design section
[0030]
[0031] Step S2, along the running direction of the vehicle, set the front end face, middle section and rear end face of the vehicle body as three calculation s...
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The invention relates to the technical field of rail transit, in particular to a method for calculating the dynamic envelope of a railway vehicle. According to this method, three calculation sections can be determined on the car body first, and observation points with the same serial number and position can be set on each section; secondly, based on the vehicle / track coupling dynamic model, the influence of vehicle and track parametric vibrations should be considered comprehensively , to quickly determine the dynamic displacement of the observation points of the three calculation sections; then, for the observation points with the same serial number, take the maximum value of the dynamic displacement of the three calculation sections; finally, according to the original coordinate value of each observation point, add its corresponding maximum Dynamic displacement and static displacement can draw the dynamic envelope of the entire vehicle running on the track. Compared with the traditional calculation method of the dynamic envelope of railway vehicles, the calculation method proposed by the invention can better reflect the objective reality, and can provide a scientific theoretical basis and specific implementation guidance for the calculation of the dynamic envelope of railway vehicles.
Description
technical field [0001] The invention relates to the technical field of rail transit, in particular to a method for calculating the dynamic envelope of a modern rail transit locomotive. Background technique [0002] With the rapid development of the railway transportation system, the requirements for the safety and stability of the railway system have become increasingly prominent. Especially for modern rail transit such as existing speed-up railways, passenger dedicated lines and high-speed railways, faster operating speeds have put forward new requirements for the demarcation of railway vehicles. Due to the complex and changeable line conditions of modern rail transit railways, as well as the many types of railway vehicles, and the need to improve the space utilization along the railway line, the calculation and verification of the dynamic envelope of railway vehicles has more general significance. In addition, the calculation of the dynamic envelope of railway vehicles is...
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IPC IPC(8): G06F19/00
Inventor王开云马荣成吕凯凯刘鹏飞黄超史智勇
OwnerSOUTHWEST JIAOTONG UNIV