Technical Brief

Characterization of Friction Condition Transition by Phase Space Trajectories

[+] Author and Article Information
Yan Shen

Marine Engineering College,
Dalian Maritime University,
Dalian 116026, China
e-mail: marinedmu@163.com

Mei Jin

Marine Engineering College,
Dalian Maritime University,
Dalian 116026, China

Ye Liu

China North Engine Research Institute,
Tianjin 300400, China

Feng Zhu

Key Laboratory of Ship-Machinery
Maintenance and Manufacture,
Dalian Maritime University,
Dalian 116026, China

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received November 6, 2015; final manuscript received June 11, 2016; published online October 10, 2016. Assoc. Editor: Daniel Nélias.

J. Tribol 139(3), 034501 (Oct 10, 2016) (5 pages) Paper No: TRIB-15-1398; doi: 10.1115/1.4034206 History: Received November 06, 2015; Revised June 11, 2016

A starved lubrication experiment and analytical model have been developed to investigate the friction condition transition (FCT) at the interface between a piston ring and a cylinder liner with the piston ring reciprocating liner test rig. To obtain a solution for the friction condition transition, phase space trajectories are used to extract the transient features of the friction force. The trajectories have three typical patterns for starved lubrication conditions. The irregular friction force of different strokes is classified based on the trajectories. When the projection of the trajectories in the phase space enters into the third pattern variation, this indicates the onset and progression of scuffing. The autocorrelation analysis of the wear surface topography at the stroke end validates the characterization method.

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Fig. 1

Diagram of the movement and contact between the piston ring and cylinder liner

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Fig. 2

Experimental friction force variation

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Fig. 3

Friction force comparison of different strokes during the starvation period

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Fig. 4

Projection of three attractor patterns in W–V and W–U spaces

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Fig. 5

Friction force variation of the PCCL–SMPR

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Fig. 6

Projection of the three trajectory patterns in W–V and W–U spaces of the PCCL–SMPR

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Fig. 7

Wear scars and their corresponding AACF at friction stage (a) I, (b) II, and (c) III




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