Interface vibration characteristics of rolling mill components based on power flow

ABSTRACT

First, the flexibility matrix of the rolling mill interfaces is extracted with Jetmundsen substructure synthesis method, and the power flow mode of the interfaces is obtained and discussed when the property of components of the interface changes with the analytical method. Second, finite element analysis (FEA) method is applied to analyse the power flow harmonic response in each interface of the rolling mill components and their power flow conductivities. The relation among the stiffness, the length of rodless cavity of the Hydraulic Gauge Control cylinder of the mill and the conductivity is discussed. Then, the power flow experimental result shows that the Hydraulic Gauge Control cylinder vibrates violently when the length of rodless cavity of the cylinder approaches 50 and 100 mm. Finally, the result comparison among analytical, FEA and experimental method is introduced.

KEYWORDS:

• Rolling mill vibration
• power flow
• interface characteristics
• harmonic response

Acknowledgments

This work was supported by the National Nature Science Fund of China (Grant No. 51775038).

Disclosure statement

The authors declare that they have no conflicts of interest.

Additional information

Funding

This work was supported by the Fundamental Research Funds for the Central Universities [FRF-AT-19-001].

Notes on contributors

Biao Xiao

Biao XIAO is studying for a doctorate at University of Science and Technology Beijing. His current research interests is mechanical vibration.

Xiaoqiang Yan

Xiaoqiang YAN received PhD degree in School of Mechanical Engineering from University of Science and Technology Beijing, Beijing, China, in 2008. Now he works at University of Science and Technology Beijing as a professor. His current research interests include control and mechanical vibration.