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Method for detecting high-speed train passenger comfort degree

A technology of high-speed trains and detection methods, applied in the direction of railway vehicle testing, etc., can solve the problems of inability to accurately reflect the vibration of the car body, complex structure of the car body, large errors, etc.

Inactive Publication Date: 2014-03-12
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology

In addition, the actual car body structure is quite complicated, and the calculation using the rigid body model will cause large errors, and it cannot accurately reflect the vibration of different positions of the car body
If it is necessary to consider the comfort of passengers in different positions in the car, it is necessary to establish a detailed finite element model of the car body, and the amount of calculation is unacceptable

Method used

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  • Method for detecting high-speed train passenger comfort degree
  • Method for detecting high-speed train passenger comfort degree
  • Method for detecting high-speed train passenger comfort degree

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Embodiment Construction

[0041] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0042] Such as Figure 1 to Figure 3 Shown, high-speed train passenger comfort detection method of the present invention, comprises the following steps:

[0043] Step A, using the virtual excitation method to generate virtual track irregularities for the stochastic dynamic analysis of the elastic car body of the high-speed train;

[0044] Considering that four wheels are randomly excited by the same track, the mathematical expressions of the time delay of the four wheelsets are as follows:

[0045] t 1 = 0 ; t 2 = 2 l 1 / v ; t 3 = 2 l 2 / v ; ...

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Abstract

The invention relates to a method for detecting high-speed train passenger comfort degree. The method comprises the following steps: A. virtual track irregularity used for elastic train body random power analysis is generated by adopting a virtual excitation mode; B. an elastic train body random vibration frequency domain is analyzed and an elastic train body random response is obtained; and C. passenger comfort degree of an elastic train body is calculated and assessed by utilizing different irregularity standards according the obtained random response. An elastic train body large-scale definite meta-model is adopted to assess comfort degree of passengers on different positions of the elastic train body. The virtual excitation mode and a symplectic algebra theory are adopted in the assessment process so that strong support is provided for enhancing high-speed train body structure design capacity, and a high-efficiency and reliable theoretical and numerical simulation technology is laid for researches of further optimizing and controlling the train and track structures.

Description

technical field [0001] The invention relates to a detection method for passenger comfort of elastic car bodies of high-speed trains, which provides strong support for improving the structural design capabilities of high-speed train cars, and establishes a reliable theory and method for further research on the optimization and control of vehicles and track structures. Numerical Simulation Technology. Background technique [0002] Railway is an economical and efficient ground transportation system. When the train is running on the track, the track coupling system of the vehicle will be excited by the irregularity of the track. This excitation has obvious randomness and is the main source of excitation that causes the vibration of the rolling stock. It has a great impact on the comfort of the passengers when the train is running. big impact. To evaluate the passenger comfort of high-speed trains, the calculation and analysis of the random vibration of the elastic car body, es...

Claims

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Application Information

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IPC IPC(8): G01M17/08
Inventor 李鹏高宝杰丁叁叁田爱琴张有为赵岩赵士忠孙维光
Owner CRRC QINGDAO SIFANG CO LTD
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