Evolvement rule of frictional vibration chaos attractor in running-in process

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (6) : 116-121.

Wear tests were conducted on the CFT-Ⅰtester. The frictional vibration signals were extracted and its attractors were researched by using the chaos theory. The variation of frictional vibration chaos attractors in the wear process was discussed. It was shown that the frictional vibration is characterized by chaos, and its chaos attractor has a specific hierarchy and is a never closed trajectory in phase space. The chaos attractor of frictional vibration displayed convergence trend at the beginning of running-in stage and tended to be in stable state as the wear process went on. The chaos attractor depicts the wear state variation from running-in wear to stable wear. Therefore, the wear state of a friction pair can be predicted and identified by observing the change of chaos attractor volume of frictional vibration signals.

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Abstract

Wear tests were conducted on the CFT-Ⅰtester. The frictional vibration signals were extracted and its attractors were researched by using the chaos theory. The variation of frictional vibration chaos attractors in the wear process was discussed. It was shown that the frictional vibration is characterized by chaos, and its chaos attractor has a specific hierarchy and is a never closed trajectory in phase space. The chaos attractor of frictional vibration displayed convergence trend at the beginning of running-in stage and tended to be in stable state as the wear process went on. The chaos attractor depicts the wear state variation from running-in wear to stable wear. Therefore, the wear state of a friction pair can be predicted and identified by observing the change of chaos attractor volume of frictional vibration signals.

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running-in / frictional vibration / chaos / attractors / evolvement rule

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SUN Di1,2，LI Guo-bin1，WEI Hai-jun1,3，CUI Yang1，LIAO Hai-feng2. Evolvement rule of frictional vibration chaos attractor in running-in process[J]. Journal of Vibration and Shock, 2015, 34(6): 116-121

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