Chaotic characteristics and attractor evolution of friction noise during friction process

作     者：Cong DING Hua ZHU Guodong SUN Yuankai ZHOU Xue ZUO 

作者机构：School of Mechatronic EngineeringChina University of Mining and Technology School of Mechanical EngineeringJiangsu University of Science and Technology Jiangsu Provincial Key Laboratory of Advanced Manufacturing for Marine Mechanical EquipmentJiangsu University of Science and Technology 

出 版 物：《Friction》 (摩擦（英文版）)

年 卷 期：2018年第6卷第1期

页      面：47-61页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51375480) the Graduate Scientific Research Innovation Projects of Jiangsu Higher Education Institutions(Grant No.KYLX16_0527) the Priority Academic Program Development of Jiangsu Higher Education Institutions 

主　　题：friction noise phase trajectory chaotic parameters Lyapunov exponent chaotic attractor 

摘      要：Friction experiments are conducted on a ring-on-disk tribometer, and friction noise produced during the friction process is extracted by a microphone. The phase trajectory and chaotic parameters of friction noise are obtained by phase-space reconstruction, and its attractor evolution is analyzed. The results indicate that the friction noise is chaotic because the largest Lyapunov exponent is positive. The phase trajectory of the friction noise follows a convergence-stability-divergence pattern during the friction process. The friction noise attractor begins forming in the running-in process, and the correlation dimension D increases gradually. In the stable process, the attractor remains steady, and D is stable. In the last step of the process, the attractor gradually disappears, and D decreases. The friction noise attractor is a chaotic attractor. Knowledge of the dynamic evolution of this attractor can help identify wear state changes from the running-in process to the steady and increasing friction processes.