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Analysis method of vibration and noise in wheel-rail area of ​​high-speed railway based on fluid-structure coupling

A fluid-structure coupling, vibration and noise technology, applied in the field of high-speed railway vibration and noise characteristics analysis, can solve the problem of inability to analyze the vibration and noise characteristics of high-speed trains

Active Publication Date: 2022-07-15
BEIJING JIAOTONG UNIV +1
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Problems solved by technology

[0004] The embodiment of the present invention provides a high-speed railway wheel-rail regional vibration and noise analysis method based on fluid-solid coupling to solve the traditional problem that the vibration and noise characteristics caused by the actual passage of high-speed trains cannot be analyzed due to the use of fixed value wheel-rail force

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  • Analysis method of vibration and noise in wheel-rail area of ​​high-speed railway based on fluid-structure coupling
  • Analysis method of vibration and noise in wheel-rail area of ​​high-speed railway based on fluid-structure coupling
  • Analysis method of vibration and noise in wheel-rail area of ​​high-speed railway based on fluid-structure coupling

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[0049] The following describes in detail the embodiments of the present invention, examples of which are provided in the accompanying drawings as one of the embodiments of the present invention, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout . The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but not to be construed as a limitation of the present invention.

[0050] It will be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" as used herein can include the plural forms as well, unless expressly stated otherwise. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of stated features, integers, steps, operations, elements and / or components, but does not exclude the presence or...

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Abstract

The invention provides a method for analyzing vibration and noise in the wheel-rail area of ​​a high-speed railway based on fluid-structure coupling. The method includes: calculating the wheel-rail interaction force according to the vibration admittance and joint roughness of the wheel, rail, and wheel-rail of the high-speed railway; The joint prediction model predicts the vibration and noise of the wheel, rail and track plate; uses the fluid domain model of the flow field in the wheel-rail region to obtain the aerodynamic pressure in the flow field, and simulates the aerodynamic noise in the wheel-rail region according to the aerodynamic pressure; , the vibration noise of the rail and the track plate, and the aerodynamic noise of the wheel-rail area. Based on the fluid-structure interaction theory, the near-field noise and the far-field noise of the wheel-rail area are analyzed. The invention uses the harmonic response analysis method to analyze the vertical and longitudinal transmission characteristics in the vibration frequency domain of the ballastless track, and realizes the joint analysis of the vibration and noise analysis of the wheel-rail region of the high-speed railway.

Description

technical field [0001] The invention relates to the technical field of characteristic analysis of high-speed railway vibration and noise, in particular to a method for analyzing vibration and noise of high-speed railway wheel-rail area based on fluid-structure coupling. Background technique [0002] High-speed railway plays a huge role in meeting my country's passenger demand and promoting economic development with its advantages of high smoothness, high stability, and high timeliness. In my country, the State Railway Administration defines China's high-speed rail as a dedicated line railway for passenger trains with a design speed of over 250 kilometers per hour and an initial operating speed of over 250 kilometers per hour. With the continuous improvement of people's living standards in our country, the people's requirements for the quality of life are constantly improving, and new requirements and new goals have also been put forward for the noise control and prevention o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/15G06F119/10
CPCY02T90/00
Inventor 侯博文高亮李佳静曾钦娥秦家栋赵闻强
Owner BEIJING JIAOTONG UNIV
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