scholarly journals MECHANICAL PROCESSES IN TRIBOTECHNICAL UNITS

2021 ◽  
Vol 08 (04) ◽  
pp. 04-09
Author(s):  
Jamaladdin Aslanov Jamaladdin Aslanov
Keyword(s):  
Contact Pressure ◽  
Metal Surfaces ◽  
Mechanical Contact ◽  
Analytical Expression ◽  
Mutual Contact ◽  
Diffusion Phenomenon ◽  
Surface Fatigue ◽  
Repulsive Forces ◽  
Contact Mechanical ◽  
High Contact Pressure

The study examined the diffusion phenomenon caused by compressive forces in tribotechnical nodes adhering to each other under high contact pressure and the mechanism of rupture of surfaces during surface fatigue. As a result, for two metal surfaces, depending on the nature of the touch, the gravitational and repulsive forces generated during the interaction in any environment are determined based on the number of touches and an analytical expression is obtained to calculate them. Keywords: tribotechnical knot, mutual contact, diffusion phenomenon, surface attraction, molecular contact, mechanical contact.

Experimental Investigation of Lubrication Properties at High Contact Pressure

2010 ◽  
Vol 40 (1) ◽  
pp. 85-97 ◽  
Author(s):  
Huaping Xiao ◽  
Dan Guo ◽  
Shuhai Liu ◽  
Xinchun Lu ◽  
Jianbin Luo
Keyword(s):  
Experimental Investigation ◽  
Contact Pressure ◽  
High Contact Pressure ◽  
Lubrication Properties

An experimental method for characterizing friction properties of sheet metal under high contact pressure

Wear ◽  
2012 ◽  
Vol 289 ◽  
pp. 82-94 ◽  
Author(s):  
Xinghua Lai ◽  
Yong Xia ◽  
Xueyuan Wu ◽  
Qing Zhou
Keyword(s):  
Experimental Method ◽  
Contact Pressure ◽  
Sheet Metal ◽  
High Contact Pressure

Stress Distribution Characteristics of Runway Pavement under New Generation Large Aircrafts

2013 ◽  
Vol 811 ◽  
pp. 218-222
Author(s):  
Li’an Zhang ◽  
Lei Zhang ◽  
Cao Shi ◽  
Shun Xin Yang
Keyword(s):  
Sensitivity Analysis ◽  
Stress Distribution ◽  
Tensile Stress ◽  
Critical Load ◽  
Contact Pressure ◽  
Pavement Design ◽  
Distribution Characteristics ◽  
Parameter Sensitivity Analysis ◽  
New Generation ◽  
High Contact Pressure

New Generation Large Aircrafts became a new member of China large airports. However, its heavy weight and high contact pressure would have great impact on the flexible runway pavement. in this paper, based on the multilayered elastic theory, the tensile stress distribution under different airplane was studied to obtain the critical load positions. Furthermore, parameter sensitivity analysis was conducted, including thickness and modulus of Asphalt Stabilized Base (ATB) layer. Results indicated that increasing ATB thickness can only decrease the tensile stress a little, and increasing the modulus of the ATB layer will be more efficient than increasing its thickness. Finally pavement design suggestions composing of both the structural and material considerations were proposed.

Local transformation of amorphous hydrogenated carbon coating induced by high contact pressure

2018 ◽  
Vol 124 ◽  
pp. 200-208 ◽  
Author(s):  
N.K. Fukumasu ◽  
C.F. Bernardes ◽  
M.A. Ramirez ◽  
V.J. Trava-Airoldi ◽  
R.M. Souza ◽  
...  
Keyword(s):  
Contact Pressure ◽  
Carbon Coating ◽  
Local Transformation ◽  
Amorphous Hydrogenated Carbon ◽  
High Contact Pressure

Tribological behavior of glass fiber reinforced-PA66 in contact with carbon steel under high contact pressure, sliding and grease lubricated conditions

Wear ◽  
2020 ◽  
Vol 456-457 ◽  
pp. 203383 ◽  
Author(s):  
Takeshi Kunishima ◽  
Yasuharu Nagai ◽  
Takanori Kurokawa ◽  
Gaëtan Bouvard ◽  
Jean-Christophe Abry ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Glass Fiber ◽  
Contact Pressure ◽  
Tribological Behavior ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
High Contact Pressure

Central and Minimum Elastohydrodynamic Film Thickness at High Contact Pressure

1997 ◽  
Vol 119 (2) ◽  
pp. 291-296 ◽  
Author(s):  
M. Smeeth ◽  
H. A. Spikes
Keyword(s):  
High Pressure ◽  
Film Thickness ◽  
Contact Pressure ◽  
Applied Load ◽  
Optical Technique ◽  
Test Rig ◽  
Minimum Film Thickness ◽  
Elastohydrodynamic Film Thickness ◽  
Contact Pressures ◽  
High Contact Pressure

A new optical technique has been developed which is able to obtain accurate film thickness profiles across elastohydrodynamic (EHD) contacts. This has been used in conjunction with a high pressure EHD test rig to obtain both central and minimum EHD film thicknesses at high contact pressures up to 3.5 GPa. The results have been compared with the classical film thickness equations of Hamrock and Dowson and also with recent high pressure computations due to Venner. It is found that minimum film thickness falls more rapidly with applied load at high than at low contact pressures, with a film thickness/load exponent of −0.3. This confirms the findings of recent high pressure computational EHD modeling.

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