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Wheeltrack rolling contact spot analysis method

A technology of rolling contact and analysis method, applied in design optimization/simulation, geometric CAD, etc., can solve the problem of low accuracy of analysis results

Pending Publication Date: 2020-07-03
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, the existing research on the wheel-rail rolling contact spot regards the contact spot as a whole, and analyzes the sliding effect and wear research on it, which leads to the inaccuracy of the final analysis results.

Method used

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  • Wheeltrack rolling contact spot analysis method
  • Wheeltrack rolling contact spot analysis method
  • Wheeltrack rolling contact spot analysis method

Examples

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Embodiment 1

[0095] In this embodiment, a certain train under the Guangzhou Metro line network is taken as an example for specific description. The process is divided into the following steps:

[0096] Step 1. According to the actual wheel-rail rolling contact relationship on site, establish a multi-body dynamics simulation model of the wheel-rail rolling contact relationship, and output the wheel-rail rolling contact variables corresponding to the wheel-rail rolling contact spots:

[0097] In order to realize the simulation of the actual wheel-rail contact, the wheelset / track multi-body dynamics model must first be established, and the basic wheel / rail parameters that have a significant impact on the wheel-rail contact relationship are determined, and the parameters with little influence are ignored. According to the actual wheelset situation on site, the initial profile of the wheelset adopts the measured S10002 profile, the nominal wheel diameter is set to 840mm, and the inner wheel flange di...

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Abstract

The invention discloses a wheeltrack rolling contact spot analysis method, which specifically comprises the following steps of: establishing a wheeltrack rolling contact relation multi-body dynamics simulation model according to an actual wheeltrack rolling contact relation, and outputting a wheeltrack rolling contact variable corresponding to a wheeltrack rolling contact spot; according to the related wheel rail rolling contact variables of the wheel rail rolling contact spots, the distribution situation of total sliding vectors in the wheel rail rolling contact spots is calculated based on the Kalker linear simplification theory, and the stick-slip area situation in the contact spots is defined; and calculating the vertical abrasion loss distribution condition in the wheel rail rolling contact spots based on an Archard abrasion model. The abrasion calculation process is close to the actual field abrasion condition; the method is simple in calculation process, accurate in calculationresult and efficient and simple in analysis process of the sliding effect and the abrasion effect of the wheel track rolling contact spots, can be used as a wheel track rolling contact spot abrasion algorithm interface of SIMPACK, GENSYS and other multi-body dynamics simulation software, and achieves simulation and calculation of the wheel set abrasion situation in the train operation process.

Description

Technical field [0001] The invention relates to the technical field of wheel-rail rolling contact analysis, in particular to a wheel-rail rolling contact spot analysis method. Background technique [0002] With the rapid development of the subway system, the subway system is also facing many problems. Take the subway train system as an example. As one of the important components of the train car body, the wheel set plays a role in guiding the train car body to move forward and turn correctly along the rail during the train operation. In addition, it also bears the rail and train car body. With all the dynamic and static loads and the severe working environment, the wheelset wear problem has become one of the most frequently encountered problems in the subway system. [0003] Real-time grasping of wheelset wear and guaranteeing the normal service performance of the wheelset is of great significance to ensuring the normal and safe operation of subway trains. The core of studying wh...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F30/15
Inventor 叶正君徐筱筱刘英舜
Owner NANJING UNIV OF SCI & TECH
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