The Relation Between the Rubbing Interface Temperature Distribution and Dynamic Thermocouple Temperature

[+] Author and Article Information
H. H. H. Shu

Lord Manufacturing Co., Erie, Pa.

Eber W. Gaylord, W. F. Hughes

Mechanical Engineering Department, Carnegie Institute of Technology, Pittsburgh, Pa.

J. Basic Eng 86(3), 417-422 (Sep 01, 1964) (6 pages) doi:10.1115/1.3653123 History: Received July 11, 1963; Online November 03, 2011


The dynamic thermocouple formed by the moving junction of two dissimilar metals is known as the Herbert-Gottwien thermocouple. It is analyzed for the case of two semi-infinite bodies having a continuous rectangular rubbing contact area. Methods for determining the interface temperature after Chao and Trigger are presented; and the dynamic thermocouple, or Herbert-Gottwien temperature, is related to the temperature distribution. It is found that the dynamic thermocouple temperature is a weighted average of the latter and the weighting function is independent of temperature distribution and depends only on the geometry of the contact area. The weighting function assumes a higher value toward the periphery than it does in the interior of the contact area. The above ambient dynamic thermocouple temperature is found to be directly proportional to a geometry factor of the contact area and to the total heat flux across the contact area.

Copyright © 1964 by ASME
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