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Railway track system dynamic performance visualized emulation method

A technology for railway track and system dynamics, applied in sustainable transportation, image data processing, special data processing applications, etc., can solve problems such as inability to accurately simulate special vibration behaviors

Inactive Publication Date: 2009-04-15
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the rail is an elastic body that participates in vibration in the form of a longitudinal beam, obviously, such a method will cause two adjacent unit blocks to intersect or produce cracks, so it can only reflect the most basic vibration characteristics of the rail system, and it is generally , it is impossible to accurately simulate the special vibration behavior of each component of the track system, such as: vertical, lateral elastic deformation and overturning motion of the rail; vertical, lateral and rotational motion of each affected sleeper

Method used

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  • Railway track system dynamic performance visualized emulation method
  • Railway track system dynamic performance visualized emulation method
  • Railway track system dynamic performance visualized emulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The first specific embodiment of the present invention: a method for visual simulation of the dynamic performance of a railway track system includes the following steps:

[0044] a. Obtain the selected train and line data from the train and line model library, use the vehicle-track coupling system dynamics calculation method, and calculate according to the set speed:

[0045] The time-vibration displacement data, time-vibration velocity data and time-vibration acceleration data of sleepers and rails within the line range affected by train vibration are stored in the dynamic database;

[0046] Usually the scope affected by train vibration is determined as the total length of the train and 25-50 meters before and after the train.

[0047] In this example, the line data in the line model library includes: outer rail superelevation, line direction, gauge, and rail bottom slope data; the vibration displacement data of line rails and sleepers includes: vertical and lateral tr...

specific Embodiment approach

[0068] The second specific embodiment of the present invention is a visual simulation method for dynamic performance of a railway track system, the steps of which are:

[0069] a. Obtain the selected train and line data from the train and line model library, use the vehicle-track coupling system dynamics calculation method, and calculate according to the set speed:

[0070] Vibration displacement data, vibration velocity data at the current moment and vibration acceleration data at the current moment at the key positions of the sleepers and rails within the line range affected by train vibration;

[0071] b. Initialize the 3D simulation scene, configure the light source in it, obtain the track bed model of the line from the line model library and display it;

[0072] c. Obtain the sleeper model and the relative structural data between the sleepers of the selected line from the line model library, and then calculate the distance traveled by the train on the line according to th...

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Abstract

The invention discloses a visual simulation method for dynamic performance of a railway track system. The profile data of the steel rails and train wheels within the influencing range of train vibration are added with the vibration displacement data to rebuild steel rails and train wheels with a vibration shape, simulate deformation under force of steel rails and train wheels, thus realizing visual simulation of vibration behaviors of steel rails and train wheels in a railway track system. The method can more actually comprehensively simulate various dynamic performance of a track system while a train is running, and is characterized by high integrity; the invention can also visually display the dynamic status of the train and the track in a three-dimension scene, which is intuitionistic, vivid and simple for use.

Description

technical field [0001] The invention relates to a vibrating system visualization simulation method, in particular to a railway track system dynamic performance visualization simulation method. Background technique [0002] In the dynamic visual simulation system, in addition to accurately describing the geometric relationship of each object, it is also necessary to realize the movement of each object in a convincing way according to its behavior rules. The fidelity of behavior simulation directly affects the analyst's understanding of Intuitive understanding and judgment of system vibration behavior. [0003] The track is the foundation of driving. Its function is to guide the rolling stock to run smoothly and safely, directly bear the load transmitted by the wheels, and transmit it to the roadbed or bridge and tunnel and other buildings. From the perspective of the cross section, the traditional track structure is composed of materials with different mechanical properties ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/00
CPCY02T90/00
Inventor 翟婉明杨吉忠王开云蔡成标赵春发
Owner SOUTHWEST JIAOTONG UNIV