Line contact rolling-slipping friction vibration noise test bed and line contact rolling-slipping friction vibration noise test analysis method

Abstract

The present invention provides a line contact rolling-slipping friction vibration noise test bed and a line contact rolling-slipping friction vibration noise test analysis method. The method can really simulate friction modes in mechanical parts such as a line contact gear, a vehicle track and the like to dynamic collect a friction moment, a relative sliding speed, a rolling speed and noise signals in real time so as to conveniently achieve research of line contact vibration noise and perform test in variable working conditions; an installation structure capable of conveniently replacing testpieces is provided to conveniently perform mounting and dismounting so as to allow the test bed to achieve research of rolling-slipping friction noise for different loads, different materials and different sizes of the test pieces in different working conditions; and moreover, a servo motor is employed to drive a shunt gear case with single-input and dual-output to form a power enclosing driving mode so as to reduce the volume of the test bed and save the cost.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and in particular relates to a line contact rolling friction vibration noise test bench and a test analysis method. Background technique [0002] Vibration and noise caused by interface friction is a very complex physical phenomenon that involves knowledge of various disciplines, including tribology, contact mechanics, dynamics, and acoustics. Therefore, frictional vibration noise is related to various factors such as surface roughness, material properties, system stiffness, and environmental conditions. Most of the existing studies use the method of dynamic modeling to establish the friction noise model, and the current experimental research is more on the sliding friction noise in the point-surface contact, and the sliding friction noise in the surface-surface contact, while for the line contact There are few studies on rolling friction noise in the form of rolling, and they are...

AI Technical Summary

Problems solved by technology

Most of the existing studies use the method of dynamic modeling to establish the friction noise model, and the current experimental research is more on the sliding friction noise in the point-surface contact, and the sliding friction noise in the surface-surface contact, while for the line contact There are few studies on rolling friction noise in the form of rolling, and they are limited to the research on establishing theoretical mathematical models

Relevant tribological research shows that, on the one hand, the theoretical model considers the interface characteristics relatively rough, and on the other hand, there is a lack of relevant experimental research. This is mainly due to the fact that the friction noise test involves many factors, high test accuracy, and high environmental requirements.

[0003] In the existing technology, the contact forms for the research of sliding friction vibration noise are mostly point contact and surface contact, such as the patent No. 201210189588.0 "A test and analysis method for friction noise and its test device" and the literature "Wang Anyu et al., Surface The effect of roughness on the characteristics of friction squeal noise [J]. Journal of Tribology, 2014, 34(4): 400-407" and the literature "H.Ben et al.An experimental study on roughness noise of dry flat surfaces[J ].wear, 2010, 268:335-345", can complete the measurement and research of sliding friction noise in the form of point contact and surface contact respectively, but for rolling and sliding friction noise in the form of line contact, the above test rigs are all can't be achieved

The patent application number 201620261624.3 "a frictional noise research device" discloses a noise reduction or sound insulation device for testing frictional noise, which is similar to an anechoic chamber, but does not provide a specific test device for generating frictional noise

From the existing patents and literature, it can be seen that the research on friction noise still lacks the relevant test bench for the research of rolling friction noise in the form of line contact, and there is a problem that the test bench needs to eliminate background noise interference

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