{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T22:27:50Z","timestamp":1775860070859,"version":"3.50.1"},"reference-count":27,"publisher":"SAGE Publications","issue":"7","license":[{"start":{"date-parts":[[2011,5,12]],"date-time":"2011-05-12T00:00:00Z","timestamp":1305158400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology"],"published-print":{"date-parts":[[2011,7]]},"abstract":"<jats:p> The rheological behaviour of several fully formulated gear oils is characterized: two mineral-based oils, one poly-\u03b1-olefin, and three ester-based oils. Experimental traction curves were obtained on a mini-traction machine, where the selected gear oils were submitted to numerous traction tests combining several temperatures, contact loads, and rolling speeds. Having obtained the experimental data from the traction tests, it was least-squares fitted to a rheological model (elasto-viscoplastic rheological model) in order to obtain the model\u2019s governing parameters: elastic modulus and limiting shear stress and their dependence on pressure and temperature. This study presents both the traction tests results and the fitted rheological parameters, and discusses the similarities and differences between the oils, as well as the influence of the operating conditions on the behaviour of the oil. <\/jats:p>","DOI":"10.1177\/1350650111405111","type":"journal-article","created":{"date-parts":[[2011,5,13]],"date-time":"2011-05-13T03:08:52Z","timestamp":1305256132000},"page":"577-593","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":33,"title":["Traction curves and rheological parameters of fully formulated gear oils"],"prefix":"10.1177","volume":"225","author":[{"given":"J A","family":"Brand\u00e3o","sequence":"first","affiliation":[{"name":"Instituto de Engenharia Mec\u00e2nica e Gest\u00e3o Industrial (INEGI), Universidade do Porto, Porto, Portugal"}]},{"given":"M","family":"Meheux","sequence":"additional","affiliation":[{"name":"Institut National des Sciences Appliqu\u00e9es de Lyon (INSA-Lyon), Lyon, France"}]},{"given":"J H O","family":"Seabra","sequence":"additional","affiliation":[{"name":"Faculdade de Engenharia da Universidade do Porto (FEUP), Porto, Portugal"}]},{"given":"F","family":"Ville","sequence":"additional","affiliation":[{"name":"Institut National des Sciences Appliqu\u00e9es de Lyon (INSA-Lyon), Lyon, France"}]},{"given":"M J D","family":"Castro","sequence":"additional","affiliation":[{"name":"Instituto Superior de Engenharia do Porto (ISEP), Porto, Portugal"}]}],"member":"179","published-online":{"date-parts":[[2011,5,12]]},"reference":[{"key":"bibr1-1350650111405111","volume-title":"Investigation of the contact of machine components (in Russian)","author":"Grubin A N","year":"1949"},{"key":"bibr2-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1243\/JMES_JOUR_1959_001_004_02"},{"key":"bibr3-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1098\/rsta.1963.0005"},{"key":"bibr4-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1098\/rspa.1977.0129"},{"key":"bibr5-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1115\/1.3453342"},{"key":"bibr6-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1243\/PIME_PROC_1986_200_134_02"},{"key":"bibr7-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1243\/PIME_PROC_1986_200_135_02"},{"key":"bibr8-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1080\/10402009408983276"},{"key":"bibr9-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1002\/jsl.3000210103"},{"key":"bibr10-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1002\/tt.3020110204"},{"key":"bibr11-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1002\/tt.29"},{"key":"bibr12-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1016\/j.wear.2009.06.020"},{"key":"bibr13-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1016\/j.wear.2009.07.020"},{"key":"bibr14-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1002\/jsl.3000180105"},{"key":"bibr15-1350650111405111","unstructured":"Hamrock B J, Dowson D\u2013Ball bearing lubrication \u2013 the elastohydrodynamics of elliptical contacts, 1981 (Wiley Interscience, New York, 211\u2013212."},{"key":"bibr16-1350650111405111","unstructured":"Gohar R\u2013Elastohydrodynamics, 1988 (Ellis Horwood, Chichester, 162\u2013166."},{"key":"bibr17-1350650111405111","first-page":"81","volume-title":"Wear control handbook","author":"Winer W O","year":"1980"},{"key":"bibr18-1350650111405111","unstructured":"Mobil Oil Corporation\u2013Mobil EHL guidebook, 3rd ed, 1981 (Mobil Technical Publications, USA, 10\u201319."},{"key":"bibr19-1350650111405111","unstructured":"Roelands, C. J. A. Correlation aspect of viscosity-temperature-pressure relationships of lubricating oils. PhD Thesis, Delft University of Technology, 1967, pp. 123\u2013124."},{"key":"bibr20-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1016\/j.triboint.2006.01.006"},{"key":"bibr21-1350650111405111","unstructured":"Sottomayor, A. Reologia de um lubrificante n\u00e3o-Newtoniano no interior de um contacto linear termoelastohidrodin\u00e2mico. Determina\u00e7\u00e3o dos par\u00e2metros reol\u00f3gicos de um lubrificante. PhD Thesis, Faculdade de Engenharia da Universidade do Porto, 2002."},{"key":"bibr22-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1016\/0043-1648(95)06775-2"},{"key":"bibr23-1350650111405111","doi-asserted-by":"publisher","DOI":"10.1016\/S0043-1648(97)00013-6"},{"key":"bibr24-1350650111405111","doi-asserted-by":"crossref","unstructured":"Sottomayor, A. Campos, A., Seabra, J., Flamand, L., and Nilias, D. 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