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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: 2008-02-13
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

[0035]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:

[0036] 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:

[0037] 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;

[0038] Or the vibration displacement data, the vibration velocity data and the vibration acceleration data of the sleeper and the rail at the current moment within the line range affected by the train vibration; usually the range affected by the train vibration is determined as the total length of the train and the front and rear of the train. 50 meters.

[0039] In this example, the line...

Embodiment 2

[0060] This example is basically the same as the steps of implementation 1, the only difference is that in step a, the selected train and line data are obtained from the three-dimensional train and line model library, and the vehicle-track coupling system dynamics calculation method is used, according to the setting What is calculated by the speed is: the vibration displacement data of the line rail and sleeper affected by the train vibration at the current moment.

[0061] Compared with Embodiment 1, this example does not calculate and store each moment, but only calculates the relevant vibration data of rails and sleepers at the current moment, and displays them while calculating. The requirements for storage devices are lower, but the calculation equipment (CPU) higher performance requirements.

[0062] The method of the invention cooperates with the dynamics visualization simulation of the vehicle system, and can complete the visualization simulation of the dynamic perform...

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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 Applications(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
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