The present work focuses on the investigation of the influence of bulk ceramic materials on the behavior of elastohydrodynamically (EHD) lubricated line contacts. The materials alumina zirconium oxide and aluminum nitride (AIN) are used. Comparative measurements were taken with steel disks made of 42CrMo4. Of primary importance are the material parameters Young’s modulus and thermal conductivity. The experimental variables pressure, temperature and oil film thickness in the EHD contact of a two disk test rig were measured with the aid of evaporated thin film sensors. As the results show, an increase in the Young’s modulus causes a clear increase of the pressure level. The oil film thickness distributions show a decline of the flattening width and of the constriction occurring at the contact outlet. The influence of the material with respect to its thermal conductivity dominates, above all, in the region of the load transmitting contact zone. The transition from a good to a bad conductor of heat causes a rise in temperature, more prominent for materials with lower thermal conductivities. This leads to viscosity decrease causing clearly reduced oil film thicknesses in the contact. [S0742-4787(00)01404-1]
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October 2000
Technical Papers
Elastohydrodynamic Lubrication Between Rolling and Sliding Ceramic Cylinders: An Experimental Investigation1
T. Sperrfechter, Dr.-Ing.
,
T. Sperrfechter, Dr.-Ing.
Hilti Corporation, Development BU Direct Fastening, PAT Technology Basics, Technical Center, 9494 Schaan, Principality of Liechtenstein
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R. Haller, Prof. Dr.-Ing.
R. Haller, Prof. Dr.-Ing.
Institut fu¨r Maschinenkonstruktionslehre und Kraftfahrzeugbau, Universita¨t Karlsruhe (TH), Kaiserstr. 12, 76128 Karlsruhe, Germany
Search for other works by this author on:
T. Sperrfechter, Dr.-Ing.
Hilti Corporation, Development BU Direct Fastening, PAT Technology Basics, Technical Center, 9494 Schaan, Principality of Liechtenstein
R. Haller, Prof. Dr.-Ing.
Institut fu¨r Maschinenkonstruktionslehre und Kraftfahrzeugbau, Universita¨t Karlsruhe (TH), Kaiserstr. 12, 76128 Karlsruhe, Germany
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division March 16, 1999; revised manuscript received April 17, 2000. Associate Technical Editor: B. O. Jacobson.
J. Tribol. Oct 2000, 122(4): 721-724 (4 pages)
Published Online: April 17, 2000
Article history
Received:
March 16, 1999
Revised:
April 17, 2000
Citation
Sperrfechter, T., and Haller, R. (April 17, 2000). "Elastohydrodynamic Lubrication Between Rolling and Sliding Ceramic Cylinders: An Experimental Investigation." ASME. J. Tribol. October 2000; 122(4): 721–724. https://doi.org/10.1115/1.1310332
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