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Fork rigid-flexible coupling vibration analysis method

A rigid-flexible coupling and vibration analysis technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems that cannot reflect the law of the dynamic influence of the turnout, does not have ergodicity, etc., to improve calculation efficiency and The effect of computational precision

Inactive Publication Date: 2021-03-02
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The irregularity excitation calculated by a certain track spectrum is a fixed excitation amplitude under certain time conditions, which cannot reflect the influence of the irregularity excitation on the wheel-rail relationship and switch dynamics after changing with time, and has no ergodicity

Method used

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  • Fork rigid-flexible coupling vibration analysis method

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Experimental program
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Embodiment 1

[0020] like figure 1 As shown, this embodiment provides a rigid-flexible coupling vibration analysis method for a turnout, which includes the following steps:

[0021] 1. Set track parameters;

[0022] 2. Generate a time-domain sampling sequence of any orbit parameter;

[0023] 3. Combining the sampling sequences in the time domain to form an overall sampling sequence for the parameters of each component of the track that conforms to the normal distribution;

[0024] 4. Perform the point selection operation on the overall sampling sequence of the parameters of each component of the track, so that the overall sampling sequence of the parameters of each component of the track obeys the uniform distribution of the hypercube in the integration domain, and obtain the optimized sampling sequence;

[0025] 5. Use the TVD difference method to solve the problem, and obtain the co-evolution process of the complex wheel-rail contact relationship in the turnout area in the time and spac...

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Abstract

The invention relates to the technical field of rail transit wheel rails, in particular to a fork rigid-flexible coupling vibration analysis method, which comprises the following steps of: 1, settingrail parameters; 2, generating a time domain sampling sequence of any rail parameter; 3, combining the time domain sampling sequences to form an overall sampling sequence of parameters of all parts ofthe rail according with normal distribution; 4, performing point selection operation on the overall sampling sequence of the parameters of each part of the rail to enable the overall sampling sequence of the parameters of each component of the rail to comply with the uniform distribution of the hypercubes in the integral domain to obtain an optimized sampling sequence; 5, solving by adopting a TVD differential format numerical method. The calculation efficiency and the calculation precision can be improved; and the fork rigid-flexible coupling dynamic system can better respond to analysis.

Description

technical field [0001] The invention relates to the technical field of rail transit wheels, in particular to a method for analyzing rigid-flexible coupling vibration of turnouts. Background technique [0002] The time and space response analysis of the vehicle-line-bridge and vehicle-rail coupling systems is relatively mature, but the evolution of the complex wheel-rail contact relationship in the fork area with the structural irregularity in the time domain is still unclear. [0003] In the prior art, deterministic vehicle and track parameters are usually used, and the uneven excitation obtained by a certain spectral line is applied to study the vehicle-switch rigid-flexible coupling dynamics problem. [0004] The irregularity excitation obtained by a certain track spectrum calculation is a fixed excitation amplitude value under the condition of a certain time, which cannot reflect the influence of the irregularity excitation on the wheel-rail relationship and the vehicle d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/17G06F119/14
CPCG06F30/20G06F30/17G06F2119/14
Inventor 徐井芒王平闫正陈嵘陈嘉胤方嘉晟钱瑶马前涛
Owner SOUTHWEST JIAOTONG UNIV