Ballast track vertical dynamic modeling system for railway transportation

Abstract

The invention discloses a ballast track vertical dynamic modeling system for railway transportation. The system is characterized by comprising an analyzing parameter selection unit, an analyzing equation establishment unit, a parameter analysis unit and a vertical dynamic modeling unit, wherein the parametric analysis selection unit is used for selecting to-be-analyzed analyzing parameters contained by a ballast track model, and the analyzing parameters comprise a steel rail, a concrete sleeper and a ballast bed; the analyzing equation establishment unit is used for respectively carrying outforce analysis on the selected analyzing parameters, that is, oscillatory differential equations corresponding to the steel rail, the concrete sleeper and the ballast bed are respectively listed; theparameter analysis unit is used for setting an analysis parameter value corresponding to each analyzing parameter; the vertical dynamic modeling unit is used for establishing and analyzing the ballasttrack vertical dynamic model, based on a pretreatment module of an ANSYS software. The ballast track vertical dynamic modeling system for the railway transportation has the advantages that the precision is high, the function is strong, the parameters are easy to determine, the calculation is simple and convenient, and the relevant influence factors closely related to a researchful problem can befully considered.

Description

technical field [0001] The invention relates to modeling and simulation technology, in particular to a vertical dynamic modeling system suitable for ballast tracks used in railway transportation. Background technique [0002] With the development of high-speed passenger transportation and heavy-duty freight transportation, the position of railway transportation in the transportation system is becoming more and more important. As the basis of railway transportation, the track structure often has unfavorable defects such as failure of fasteners, hanging of sleepers, and uneven subsidence of the roadbed under the repeated action of train loads. The existence of these defects is very unfavorable to the safe operation of the train, and greatly accelerates the fatigue damage of the track structure. [0003] Specifically, because the track is one of the main technical equipment of railways and subways, it is the basis of driving. It directly bears the load transmitted by the wheel...

AI Technical Summary

Problems solved by technology

In the development history of nearly two hundred years, the ballast track dynamic model has gone through a development process from simple to complex in form and from less to more functional, but in general it can be divided into lumped parameter model, continuous support beam model model, discrete point supporting beam model, etc.; however, the existing simulation modeling methods or existing models are relatively complex and are currently less used; or they cannot consider the unevenness and unevenness of the track structure, and cannot be used to study the impact of track defects on the track. Disadvantages such as the influence of vibration

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