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Research Papers: Friction and Wear

Stability Analysis of Tribosystem Based on the Energy Feature of Friction Vibration

[+] Author and Article Information
Ting Liu

Marine Engineering College,
Dalian Maritime University,
No. 1 Linghai Road,
Dalian 116026, Liaoning, China
e-mail: liutingltltltlt@163.com

Guobin Li

Marine Engineering College,
Dalian Maritime University,
No. 1 Linghai Road,
Dalian 116026, Liaoning, China
e-mail: guobinli88@163.com

Haijun Wei

Merchant Marine College,
Shanghai Maritime University,
Shanghai 200135, China

Pengfei Xing

Marine Engineering College,
Dalian Maritime University,
No. 1 Linghai Road,
Dalian 116026, Liaoning, China

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received October 23, 2016; final manuscript received November 4, 2016; published online May 11, 2017. Assoc. Editor: Daejong Kim.

J. Tribol 139(5), 051604 (May 11, 2017) (6 pages) Paper No: TRIB-16-1337; doi: 10.1115/1.4035309 History: Received October 23, 2016; Revised November 04, 2016

The tribosystem stability in different wear stages was analyzed by the friction vibration energy feature, which was extracted from the phase-space-matrix of friction vibration attractor with singular value decomposition (SVD). An energy feature parameter K of friction vibration was defined as the norm of the singular value feature vector, and the variation of K in different wear stages was also investigated in this paper. Results show that K becomes larger in the running-in wear stage, friction vibration energy becomes higher and tribosystem stability gets worse; K fluctuates smoothly and steadily in the stable wear stage, friction vibration energy is stable and the tribosystem is dynamically stable; and K increases sharply in the severe wear stage, the friction vibration energy increases dramatically and the tribosystem stability decreases greatly. Therefore, the friction vibration energy can reflect the tribosystem stability in different wear stages with the energy feature parameter K.

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References

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Figures

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Fig. 1

Schematic diagrams of CFT-I wear tester: (a) experiment device and (b) tribological pairs

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Fig. 2

(a) Waveforms diagrams and (b) spectrums of signals in 3 mins: (I) vibration signal and (II) friction vibration signal

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Fig. 3

Friction vibration attractor in different wear stages: (I) running-in wear stage—(a) beginning, (b) 20 minss, and (c) 40 mins, (II) stable wear stage—(a) 40 mins, (b) 60 mins, and (c) 80 mins, and severe wear stage—(a) 80 mins, (b) 85 mins, and (c) 90 mins

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Fig. 4

Temporal variation of the energy feature parameter K of friction vibration in different wear stages

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Fig. 5

Temporal variation of friction coefficient in different wear stages

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