Analysis of Traction Curve in Linear Region Considering Volume Viscoelasticity

Narihiko Yoshimura; Noboru Umemoto; Tsunamitsu Nakahara

doi:10.1115/1.2833928

Journal of Tribology | Volume 121 | Issue 2 | Research Paper

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RESEARCH PAPERS

Analysis of Traction Curve in Linear Region Considering Volume Viscoelasticity

Narihiko Yoshimura, Noboru Umemoto and Tsunamitsu Nakahara

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Narihiko Yoshimura, Noboru Umemoto

Tonen Corporation, Corporate Research & Development Laboratory, 1-3-1, Nishi-Tsurugaoka Ohimachi, Iruma-gun, Saitama, 356-8505, Japan

Tsunamitsu Nakahara

Department of Mechanical and Intelligent Systems Engineering, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguroku, Tokyo, 152, Japan

J. Tribol 121(2), 252-258 (Apr 01, 1999) (7 pages) doi:10.1115/1.2833928 History: Received January 15, 1998; Revised June 09, 1998; Online January 24, 2008

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Abstract

Measurements of the gradient in the linear region of traction curve, where the effects of heat generation and nonlinearity of shear viscosity can be neglected were made for two kinds of synthetic oils, DOP and 5P4E, using a traction tester improved to a precision less than 0.01 percent in slip ratio. The measured results were compared with the theoretical results based on a viscoelastic model for shear stress and on an elastic model for compressibility using primary data of the rheological properties which were obtained not by means of traction test; they were markedly less than the theoretical results under low speed for both oils and also under high speed for DOP. A new analysis of the traction was performed considering volume viscoelasticity for compressibility which relates shear viscoelasticity under high pressure. The theoretical results agree fairly with the measured results.

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Yoshimura N, Umemoto N, Nakahara T. Analysis of Traction Curve in Linear Region Considering Volume Viscoelasticity. ASME. J. Tribol. 1999;121(2):252-258. doi:10.1115/1.2833928.

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Analysis of Traction Curve in Linear Region Considering Volume Viscoelasticity

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