Research Papers: Contact Mechanics

The Effect Analysis of Contact Stiffness on Wear of Clearance Joint

[+] Author and Article Information
Zhu Aibin

Key Laboratory of Education Ministry for
Modern Design and Rotor-Bearing System,
Xi'an Jiaotong University,
28 Xianning West Road,
Xi'an 710049, China
e-mail: abzhu@mail.xjtu.edu.cn

He Shengli

Key Laboratory of Education Ministry for
Modern Design and Rotor-Bearing System,
Xi'an Jiaotong University,
28 Xianning West Road,
Xi'an 710049, China
e-mail: 1562430362@qq.com

Zou Chao

Key Laboratory of Education Ministry for
Modern Design and Rotor-Bearing System,
Xi'an Jiaotong University,
28 Xianning West Road,
Xi'an 710049, China
e-mail: 214526383@qq.com

Chen Wei

Key Laboratory of Education Ministry for
Modern Design and Rotor-Bearing System,
Xi'an Jiao Tong University,
28 Xianning West Road,
Xi'an 710049, China
e-mail: chenw@mail.xjtu.edu.cn

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received January 23, 2016; final manuscript received July 11, 2016; published online November 30, 2016. Assoc. Editor: Bugra Ertas.

J. Tribol 139(3), 031403 (Nov 30, 2016) (9 pages) Paper No: TRIB-16-1039; doi: 10.1115/1.4034529 History: Received January 23, 2016; Revised July 11, 2016

The accuracy and efficiency are hardly acquired together in most wear analysis methods. Especially, the effect of contact stiffness is rarely considered in the wear analysis process. Therefore, a wear analysis method of clearance joint considering the effect of contact stiffness is presented. Massless link and spring damping (MLSD) model is used to conduct dynamic analysis of clearance joint system considering the effect of contact stiffness. The nonsymmetric Winkler surface model is taken to compute the contact pressure distribution. The Archard wear theory is adopted to calculate the wear amount of contact surface. The surface contour changes with the wear calculation results over time. Then, the dynamic wear trend of clearance joint is acquired. The analysis results reveal that when the contact stiffness coefficients are small, the effect on wear results of clearance joint becomes obvious and turns to a different change trend with the change of rotation speed. The effect of different contact stiffness is fully considered and the wear analysis results are obtained with a high calculation accuracy and efficiency. The paper's work can provide guidance for the design of same type mechanisms, and have great theoretical significance and application value to the lifetime prediction of clearance joint system.

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Fig. 1

The dynamic wear algorithm flowchart of clearance joint considering the effect of contact stiffness

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Fig. 2

The MLSD analysis model of slider–crank mechanism with clearance

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Fig. 3

The contacting schematic of nonsymmetric Winkler surface model

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Fig. 4

The schematic of crank slider mechanism

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Fig. 5

The actual experimental device of crank slider mechanism

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Fig. 6

The comparison of experimental data and simulation data at different rotation speed: (a) 148 r/min and (b) 276 r/min

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Fig. 7

The comparison of experimental data and simulation data in different wear cycles: (a) 40,000 rpm and (b) 70,000 rpm

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Fig. 8

The comparison of experimental data and simulation data with different initial clearance: (a) e = 0.05 mm and (b) e = 0.15 mm

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Fig. 9

The comparison of results in this paper with results of other paper on different conditions: (a) 120 r/min, 10,000 rpm and (b)240 r/min, 10,000 rpm

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Fig. 10

The comparison of wear results with different contactsurface stiffness coefficients: (a) 120 r/min, 10,000 rpm and (b) 240 r/min, 10,000 rpm

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Fig. 11

The comparison of results in this paper's algorithm on different conditions: (a) 240 r/min and (b) 10,000 rpm



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