Probing crystallography-induced anisotropy and periodic property of atomic friction in MoS2 via fast Fourier transform processing

Li, Meng; Liu, Lianqing; Jiao, Niandong; Yu, Peng; Xi, Ning; Wang, Yuechao

doi:10.1109/nems.2016.7758298

Cited by 2 publications

(1 citation statement)

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“…Friction interaction between contacting surfaces is commonly present in nature, from the scale of the earth's tectonic plates to the scale of atoms. [1][2][3][4][5] In general, friction can dissipate the energy of systems and act as a stabilization mechanism; however, it can also excite vibration in engineering and daily life under certain circumstances. [6][7][8] One important kind of friction-induced vibration is the stick-slip oscillation which consists of two kinds of motion schemes: a stick regime in which the friction pair moves together and a slip regime in which there is relative motion between them.…”

Section: Introductionmentioning

confidence: 99%

The effects of grooved rubber blocks on stick–slip and wear behaviours

Wang

Ouyang

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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This work presents an experimental and theoretical combined study of the effects of the elastic rubber blocks with different surface modifications on the friction-induced stick–slip oscillation and wear of a brake pad sample in sliding contact with an automobile brake disc. The experiments are conducted on the customized experimental setup in a pad-on-disc configuration. The experimental results show that (1) the friction system with the plain rubber block still exhibits visible stick–slip oscillation, but the intensity of the stick–slip oscillation is reduced to a certain degree compared with the Original friction system (without rubber block); (2) the grooved rubber blocks display a better ability to reduce the stick–slip oscillation compared with the plain rubber block; (3) the rubber blocks with a vertical groove (perpendicular to the relative velocity) or a horizontal groove (parallel to the relative velocity) or a diagonal groove (45° inclined to the relative velocity) on their surfaces can suppress the stick–slip oscillation more effectively with various degrees of success. The experimental results also reveal the varying effects of the different rubber blocks on wear. To explain the experimental phenomenon reasonably, a theoretical analysis is conducted to investigate the effects of different rubber blocks on both stick–slip oscillation and wear using ABAQUS. Furthermore, the analysis of the contact pressure on the pad interfaces and the deformation of the rubber blocks are studied to provide a possible explanation of the experimental results.

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