MATEC Web Conf.
Volume 355, 20222021 International Conference on Physics, Computing and Mathematical (ICPCM2021)
|Number of page(s)||8|
|Section||Investigation in Physics and Materials|
|Published online||12 January 2022|
Influence of roundness error screw on running characteristics of sliding bearing based on SDT
1 School of Mechanical and Traffic Engineering, Guangxi University of Science and Technology, Liuzhou 545006 Guangxi, China
2 Guangxi Earthmoving Machinery Collaborative Innovation Center, Liuzhou 545006 Guangxi, China
* Corresponding author: firstname.lastname@example.org
In order to study the influence of roundness error on the oil film characteristics of journal bearing rotor system, a dynamic model of journal bearing rotor system with roundness error was established, and a new generalized roundness error equation is derived based on the small displacement screw (SDT) theory. And the influence of roundness error screw parameter dx represented by SDT on critical speed and stability of sliding bearing is analyzed emphatically. The results show that the existence of journal roundness error is beneficial to the bearing capacity and stability of sliding bearing rotor system to a certain extent, and with the increase of roundness error screw parameter, its promoting effect is more obvious; At the same time, the critical speed of the system will increase with the increase of screw parameter, especially when eccentricity ε>0.6; And when Sommerfeld number S>0.6, the roundness error of journal has little influence on stability.
Key words: Smsall displacement theory (SDT) / Sliding bearing / Roundness error / Oil film characteristic
© The Authors, published by EDP Sciences, 2022
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