Method and device for measuring parameters of rubber pad for rail

Abstract

The invention provides a method and device for measuring the parameters of rubber pads for rails. The method for measuring parameters of rubber pads for rails includes: respectively obtaining the static load-static displacement curves of the rubber pads at each temperature at multiple temperatures, and according to the static load- Perform finite element analysis and simulation on the static displacement curve to obtain the range of dynamic load that the rubber pad can withstand, and measure the dynamic load-dynamic displacement curve of the rubber pad at each temperature of multiple temperatures at the second loading rate, and then according to the above The dynamic load-dynamic displacement curve obtains the dynamic mechanical characteristics of the rubber pad. Combining the dynamic mechanical characteristics with the temperature-frequency equivalent principle and the WLF equation, the dynamic mechanical parameters of the rubber pad at different frequencies at each temperature of multiple temperatures can be obtained. Compared with the prior art, the method can improve the defects of inaccurate parameter measurement and high cost of the original ratio rubber pad for rails.

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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