赫兹接触理论.pdf

Tribologp Internntiond Vol. 30, No. 3, pp. 235-237, 1997 Copyright 0 1996 Elsevier Science Ltd Printed in Great Britain. Ail rights reserved 0301~679X/96/$17.00 +O.OO SCIENCE: PII: SO301-679X(96)00051-5 Analysis of elliptical Hertzian J. A. Greenwood The paper compares three approximate methods of finding the area of contact, the contact pressure and the deformation in elliptical Hertzian contacts. Copyright 0 1996 Elsevier Science Ltd Keywords: Hertzian contact, elliptical contact, contact pressure, contact deformation Some years ago the author published a method’ of This method works well for mildly elliptical contacts calculating the maximum contact pressure and the when answers of engineering accuracy are acceptable. approas;h for elliptical Hertzian contacts by using the For example, for B/A = 5, the area is 0.2% too large, simple circular contact relations together with an effec- and the Hertz pressure 0.2% too small. tive radius R,. Experience over the years, by the author