TY - GEN
T1 - A Finite-Element Local-Enrichment (FE-LE) model for texturing journal-bearing surfaces
AU - Xiong, Shangwu
AU - Wang, Q. Jane
AU - Lin, Chih
AU - Liu, Wing Kam
AU - Zhu, Dong
PY - 2006/1/1
Y1 - 2006/1/1
N2 - The effect of roughness is an important consideration in the lubrication analysis and surface geometric design of heavy-duty machine elements. Deterministic simulation techniques have been developed for the investigation of point-contact mixed-lubrication problems. Such approaches should also be extended to obtain deterministic mixed lubrication solutions for journal-bearing conformal-contact systems. However, journal-bearing mixed lubrication involves a much larger area of surface interaction as compared to that in point contact problems. It is difficult to use similar micro/nano scale meshes directly to journal bearings under the current computation capability. It is a great challenge to develop a new deterministic numerical model for the mixed lubrication of journal bearing systems with the consideration of the effect of surface geometry design. This paper presents a macro-micro scale finite-element local- enrichment model for the deterministic analysis of conformal-contact mixed lubrication, in which a coarse mesh is used to determine the elastic deformation of a journal bearing surface, whilst locally refined meshes are used for the analysis of the roughness effect. The results from investigating the performance of bearing surfaces with sinusoidal and dimple textures suggest that the minimum film thickness may be improved through an appropriate surface texture configuration.
AB - The effect of roughness is an important consideration in the lubrication analysis and surface geometric design of heavy-duty machine elements. Deterministic simulation techniques have been developed for the investigation of point-contact mixed-lubrication problems. Such approaches should also be extended to obtain deterministic mixed lubrication solutions for journal-bearing conformal-contact systems. However, journal-bearing mixed lubrication involves a much larger area of surface interaction as compared to that in point contact problems. It is difficult to use similar micro/nano scale meshes directly to journal bearings under the current computation capability. It is a great challenge to develop a new deterministic numerical model for the mixed lubrication of journal bearing systems with the consideration of the effect of surface geometry design. This paper presents a macro-micro scale finite-element local- enrichment model for the deterministic analysis of conformal-contact mixed lubrication, in which a coarse mesh is used to determine the elastic deformation of a journal bearing surface, whilst locally refined meshes are used for the analysis of the roughness effect. The results from investigating the performance of bearing surfaces with sinusoidal and dimple textures suggest that the minimum film thickness may be improved through an appropriate surface texture configuration.
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U2 - 10.1115/ijtc2006-12260
DO - 10.1115/ijtc2006-12260
M3 - Conference contribution
AN - SCOPUS:33751264711
SN - 0791837890
SN - 9780791837894
T3 - Proceedings of STLE/ASME International Joint Tribology Conference, IJTC 2006
BT - Proceedings of STLE/ASME International Joint Tribology Conference, IJTC 2006
PB - American Society of Mechanical Engineers
T2 - STLE/ASME International Joint Tribology Conference, IJTC 2006
Y2 - 23 October 2006 through 25 October 2006
ER -