Parameter measuring method and device for rubber mat for track

Abstract

The invention provides a parameter measuring method and device for a rubber mat for a track. The parameter measuring method for the rubber mat for the track comprises the steps that a static load-static displacement curve of the rubber mat at each of multiple temperatures is obtained, finite element analysis and simulation are performed according to the static load-static displacement curves to obtain the range of dynamic loads capable of being borne by the rubber mat, a dynamic load-dynamic displacement curve of the rubber mat at each of the multiple temperatures is obtained at a second loading rate, dynamic and mechanical features of the rubber mat are obtained according to the dynamic load-dynamic displacement curves, the dynamic and mechanical features are combined with the temperature frequency equivalence principle and the WLF equation, and dynamic and mechanical parameters of the rubber mat at different frequencies at each of the multiple temperatures can be obtained. Compared with the prior art, the defects that measurement of parameters of the rubber mat for the track of the original proportion is not accurate and high in cost can be overcome.

Description

technical field [0001] The invention relates to the technical field of parameter measurement, in particular to a method and device for measuring parameters of rubber pads for rails. Background technique [0002] The vibration frequency of steel rails in rail transit such as railways and subways is relatively wide, and the vibration frequency can be as high as several thousand hertz. At the same time, the railway line is a belt-shaped structure, and the temperature span along the line is large, and the annual temperature difference often exceeds tens or even hundreds of degrees Celsius. In order to obtain the parameters of rubber pads for railway and subway tracks, such as temperature / frequency variable energy storage stiffness and temperature / frequency variable loss factor, it is usually necessary to provide high-frequency heavy-duty electro-hydraulic servo vibration devices with large dimensions and temperature A temperature control box with a wide adjustable range is neit...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method for measuring the parameters of the rubber pad for rails, so as to improve the inaccurate measurement of the parameters of the rubber pad for rails and the high cost of the original ratio.

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