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Different-step-size efficient dynamic analysis method for train-rail-structure coupling system

A coupling system, dynamic analysis technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of low efficiency of dynamic analysis, and achieve the effect of saving acquisition time, improving acquisition efficiency, and ensuring accuracy

Inactive Publication Date: 2017-12-08
CENT SOUTH UNIV
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Problems solved by technology

[0007] Aiming at the problem that the dynamic analysis efficiency of the current train-track-structure coupling system is too low, the purpose of the present invention is to propose an asynchronous long and high-efficiency dynamic analysis method for the train-track-structure coupling system

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  • Different-step-size efficient dynamic analysis method for train-rail-structure coupling system

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0035] figure 1 It is an analysis flowchart of an asynchronous long-efficiency dynamic analysis method for a train-track-structure coupling system according to an example of the present invention. Such as figure 1 As shown, there are mainly five steps as follows: (1) Generate train coefficient matrix, track coefficient matrix, and substructure coefficient matrix according to train parameters, track parameters, and substructure parameters; Coupled as a train-track subsystem, the substructure model is taken as another subsystem; (3) In each main time step, the dynamic response of the system at the previous main time step is used to obtain the substructure subsystem of the current main time step Dynamic response; (4) In each sub-time step, linear interpolation is performed according to the dynamic response of the substructure s...

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Abstract

The invention discloses a different-step-size efficient dynamic analysis method for a train-rail-structure coupling system. The method comprises a train structure model module, a rail structure model module, a lower structure model module, a wheeltrack dynamic contact model module between wheels and a rail steel rail, a rail unsmooth module and a dynamic mutual action model module between the rail and a lower structure, wherein the train structure model and the rail structure model are coupled into a train-rail subsystem through a wheeltrack contact relationship, and the lower structure is a lower structure subsystem; the train-rail subsystem and the lower structure subsystem are coupled through a mutual action force equilibrium condition between the rail and the lower structure; and the train-rail subsystem and the lower structure subsystem adopt different time integral step sizes, the train-rail subsystem adopts a sub step size of the small time integral step size, and the integral step size of the lower structure subsystem adopts a main step size of the large time integral step size, wherein the main step size is the integer multiple or non-integer multiple of the sub step size.

Description

technical field [0001] The invention relates to the technical field of railway engineering application and design, in particular to an efficient dynamic analysis method for a train-track-structure coupling system based on a train-track-structure space coupling model. Background technique [0002] Due to the high speed of trains on existing lines, newly-built passenger dedicated lines and high-speed railways, in order to meet the requirements of driving safety and riding comfort, the relevant design codes have higher requirements for track smoothness and rigidity of the under-rail structure; at the same time, from In terms of environmental protection, land saving, site soil conditions, terrain, etc., countries with developed high-speed rail transportation such as China, France, Germany, and Japan often use viaducts as the substructure of the track in passenger dedicated lines and high-speed rail lines. Taking the Beijing-Shenzhen-Hong Kong Passenger Dedicated Line, Zhengxi-We...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/367
Inventor 朱志辉龚威王力东杨乐
Owner CENT SOUTH UNIV
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