Visual simulating method for dynamic contact of railway rolling stock wheel and rail

A technology of dynamic contact and simulation method, applied in sustainable transportation, image data processing, special data processing applications, etc., can solve problems such as difficult control, complex calculation of viewpoint changes, and difficult to observe details, etc., to achieve strong engineering application value, Calculation of simple effects

Inactive Publication Date: 2007-10-10
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0003] The wheel-rail relationship is the basis for the study of locomotive vehicle-track coupling dynamics. The geometric constraints between the wheel and rail are an important part of the wheel-rail relationship. The three-dimensional display of the wheel-rail relationship contains a wealth of information, but when observing the wheel-rail contact relationship, we often focus on the time-history change of the wheel-rail contact point. In the three-dimensional display, the calculation of the viewpoint change is com

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  • Visual simulating method for dynamic contact of railway rolling stock wheel and rail

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Embodiment

[0027] A visual simulation method for wheel-rail dynamic contact of railway locomotive vehicles, the steps of which are as follows:

[0028] Step a, obtain the selected wheel and rail section data from the train model library and the line database, determine the balance position of the wheel and rail, and at the balance position, through the existing model generation method (such as programming method based on CreatorAPI, etc.) , discretize the wheel-rail contact section to generate a sufficient number of discrete point data, and then create a plane model of the wheel-rail contact section by means of points, lines, and surfaces. When discretizing the wheel-rail contact section, the number of discrete points is generally 150 to 250 points, and 200 points is better; if it is less than 150 points, the generated plane model will appear rough; and if it is higher than 250 points, the calculation amount Larger, slower generation time. The measured data of the wheel-rail section sto...

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Abstract

The present invention discloses a visualization emulation method of railway locomotive vehicle wheel track dynamic contact. Said method includes the following steps: firstly, constructing section model of left and right side wheels of balance position and steel track; utilizing vehicle-track coupling dynamics calculation method to calculate displacement of five freedoms of vertical direction, transverse, head-shaking, side-rolling and rotation of the wheel when the train is running, and making them be superimposed to left and right wheels; at the same time calculating displacement of three freedoms of vertical direction, transverse and torsion of left and right side tracks and track displacement produced by railway line non-balance, making wheel displacement and track displacement be superimposed on the balance position of track contact section model; finally, making assembly and making wheel track dynamic space contact relation ship implement two-dimensional visualization emulation reproduction.

Description

technical field [0001] The invention relates to the fields of visual simulation, calculation software data post-processing, and simulation instrument development, in particular, a method for visualizing dynamic interaction between wheels and rails of railway locomotives and vehicles. Background technique [0002] The development of computer simulation technology, especially the rapid development of computer graphics visualization technology, provides strong technical support for the perfection and improvement of vehicle-track coupling dynamics simulation analysis system. In the previous vehicle-track coupling dynamics and traditional vehicle dynamics simulation, most of them focused on the numerical simulation of the model, that is, they only cared about the numerical calculation results and ignored the display and intuitive judgment of the results, and mostly in the form of calculation modules. It appears that the integration and comprehensiveness of the system are slightly...

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Application Information

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IPC IPC(8): G06T17/40G06F17/50G06T19/00
CPCY02T90/00
Inventor 翟婉明王开云杨吉忠苏虎蔡成标赵春发
Owner SOUTHWEST JIAOTONG UNIV
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