Vehicle-track-bridge coupled vibrationfrequency domain model with middle and high frequency response output

A coupling vibration and high-frequency response technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as accurate prediction of vibration and noise in difficult rail transit environments, and achieve improved computing efficiency, strong applicability, and The effect of ensuring calculation accuracy

Active Publication Date: 2017-05-10
GUIZHOU INST OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to propose a vehicle-rail-bridge coupled vibration frequency domain model of a medium-high frequency response, to solve the traditional time-domain model when modeling and dynamic analysis of the vehicle-rail-bridge coupling system, but the time The domain model is mainly used to analyze the strength of the bridge st

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  • Vehicle-track-bridge coupled vibrationfrequency domain model with middle and high frequency response output
  • Vehicle-track-bridge coupled vibrationfrequency domain model with middle and high frequency response output
  • Vehicle-track-bridge coupled vibrationfrequency domain model with middle and high frequency response output

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Embodiment Construction

[0067] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0068] Such as Figure 1-21 As shown, a vehicle-rail-bridge coupled vibration frequency domain model that outputs medium and high frequency responses includes the following steps:

[0069] The first step is to select the vehicle parameters, track structure parameters, wheel-rail combination roughness spectrum, bridge structure parameters and driving speed parameters included in the vehicle-rail-bridge coupling vibration simulation prediction;

[0070] In the second step, according to the vehicle parameters selected in step (1), a vehicle model with 10 degrees of freedom is established, and 1 / 2 of the car body, 1 / 2 of the bogie and wheels along the longitudinal direction are considered as rigid bodies, and the car body and The ups and downs and nodding degrees of freedom of the bogie and the ups and downs of the wheels;

[00...

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Abstract

The invention discloses a vehicle-track-bridge coupled vibrationfrequency domain model with middle and high frequency response output. The model selects vehicle-track-bridge coupled vibration simulation prediction parameters to be inputted into the vehicle-track-bridge coupled model, based on a vehicle dynamics equation and the vehicle-track-bridge coupled model to solve a wheel admittance matrix and an orbital admittance matrix respectively, lastly substitutes the solved dynamic wheel rail force into the vehicle motion equation and a track-bridge coupling model motion equation as the excitation source of vehicle model and track-bridge coupling model, and further solves the frequency domain dynamic response of the vehicle, track and bridge structures caused by dynamic wheel rail force. The vehicle-track-bridge coupled vibrationfrequency domain model with middle and high frequency response output can unveil the mechanism and influence law of vibration and energy generation and transmission of vehicle-rail-bridge, and provides theoretical basis for taking targeting measures to reduce vibration and noise.

Description

technical field [0001] The invention relates to a vehicle-rail-bridge coupled vibration frequency domain model that outputs medium and high frequency responses, which can be applied to the prediction of medium and high frequency vibration responses of elevated rail transit vehicles, tracks and bridge structures, and the above medium and high frequency responses output by the model can be As an excitation source for rail transit environmental vibration and noise prediction, it provides theoretical support for the study of rail transit environmental vibration and noise problems. Background technique [0002] With the development of social economy and the continuous advancement of urbanization, traffic problems have become increasingly prominent. As a large-capacity transportation tool, rail transit can effectively solve the problem of high-density passenger flow, and its role in promoting economic development cannot be ignored. Rail transit elevated lines occupy a large propo...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/06G06F2119/10
Inventor 张志俊范杰张挣鑫张敏张玥徐桂弘邓思捷
Owner GUIZHOU INST OF TECH
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