STUDY ON THE EFFECT OF SURFACE ROUGHNESS PATTERN ON THE THERMOELASTIC INSTABILITY IN LUBRICATED SLIDING SURFACES

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EBRAHIMI ABOLFAZL; AKBARZADEH SALEH; VAEZPOUR ALIREZA

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Journal: Modares Mechanical Engineering Year:2016 | Volume:15 | Issue:11 Page(s): 17-25

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Title

STUDY ON THE EFFECT OF SURFACE ROUGHNESS PATTERN ON THE THERMOELASTIC INSTABILITY IN LUBRICATED SLIDING SURFACES

Author(s)

EBRAHIMI ABOLFAZL | AKBARZADEH SALEH | VAEZPOUR ALIREZA | Issue Writer Certificate

Keywords

SURFACE PATTERNQ2

SURFACE ROUGHNESSQ1

THERMOPLASTIC INSTABILITYQ2

TRIBOLOGYQ2

Abstract

The different kinds of sliding surfaces like clutches, and breaks are susceptible to a surface damage called thermo elastic instability. Instability refers to the unlimited growth turbulence of temperature and pressure, leading to very high local temperatures and wear on the hot spots. In this research, the effect of surface texture on the thermo elastic instability is investigated under mixed lubrication regime. For this purpose, a model consisting of a smooth surface with high thermal conductivity and a rough surface with low thermal conductivity is considered. Thus, a computer program is employed to numerically generate three different SURFACE ROUGHNESS patterns, i.e. transverse, longitudinal, and isotropic. Then the flow factors which are correction factors to the Reynolds equation for considering the SURFACE ROUGHNESS pattern are employed to study the effect of SURFACE PATTERN on the thermo elastic instability. To conduct this study, an algorithm is developed to regenerate the thermo elastic instability results in the published literature and then is used to find the critical speed for three types of SURFACE PATTERNs beyond which thermo elastic instability leading to the formation of hot spots is likely to occur. Finally it is shown under similar operating conditions; the critical speed is highest for the longitudinal SURFACE PATTERN.

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APA: Copy

EBRAHIMI, ABOLFAZL, AKBARZADEH, SALEH, & VAEZPOUR, ALIREZA. (2016). STUDY ON THE EFFECT OF SURFACE ROUGHNESS PATTERN ON THE THERMOELASTIC INSTABILITY IN LUBRICATED SLIDING SURFACES. MODARES MECHANICAL ENGINEERING, 15(11), 17-25. SID. https://sid.ir/paper/177770/en

Vancouver: Copy

EBRAHIMI ABOLFAZL, AKBARZADEH SALEH, VAEZPOUR ALIREZA. STUDY ON THE EFFECT OF SURFACE ROUGHNESS PATTERN ON THE THERMOELASTIC INSTABILITY IN LUBRICATED SLIDING SURFACES. MODARES MECHANICAL ENGINEERING[Internet]. 2016;15(11):17-25. Available from: https://sid.ir/paper/177770/en

IEEE: Copy

ABOLFAZL EBRAHIMI, SALEH AKBARZADEH, and ALIREZA VAEZPOUR, “STUDY ON THE EFFECT OF SURFACE ROUGHNESS PATTERN ON THE THERMOELASTIC INSTABILITY IN LUBRICATED SLIDING SURFACES,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 11, pp. 17–25, 2016, [Online]. Available: https://sid.ir/paper/177770/en

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