A Study of Effect of Various Normal Force Loading Forms on Frictional Stick-Slip Vibration

Xiaocui Wang; Runlan Wang; Bo Huang; Jiliang Mo; Huajiang Ouyang

doi:10.37965/jdmd.v2i2.48

Authors

Xiaocui Wang College of Mechanical and Electrical Engineering, Wenzhou University, China and Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong University, Sichuan, Chengdu, China
Runlan Wang Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong University, Sichuan, Chengdu, China and AVIC Optoelectronics Technology Co., Ltd, Henan, Luoyang, China
Bo Huang Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong University, Sichuan, Chengdu, China and Sichuan Aerospace Fenghuo Servo Control Technology Corporation,Sichuan, Chengdu, China
Jiliang Mo Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong University, Sichuan, Chengdu, China
Huajiang Ouyang School of Engineering, University of Liverpool, UK https://orcid.org/0000-0003-0312-0326

DOI:

https://doi.org/10.37965/jdmd.v2i2.48

Keywords:

stick-slip vibration, normal force, experimental study, phase space reconstruction

Abstract

In this work, a comparative study is performed to investigate the influence of time-varying normal forces on the friction properties and friction-induced stick-slip vibration (FIV) by experimental and theoretical methods. In the experiments, constant and harmonic-varying normal forces are applied, respectively. The measured vibration signals under two loading forms are compared in both time and frequency domains. In addition, mathematical tools such as phase space reconstruction and Fourier spectra are used to reveal the science behind the complicated dynamic behavior. It can be found that the friction system shows steady stick-slip vibration, and the main frequency does not vary with the magnitude of the constant normal force, but the size of limit cycle increases with the magnitude of the constant normal force. In contrast, the friction system under the harmonic normal force shows complicated behavior, for example, higher-frequency larger-amplitude vibration occurs and looks chaotic as the frequency of the normal force increases. The interesting findings offer a new way for controlling FIV in engineering applications.

Conflict of Interest Statement
The authors declare no conflicts of interest.