Accession Number : AD0266720

Title :   EXPERIMENTS ON SLIP DAMPING AT ROUNDED CONTACTS

Corporate Author : MINNESOTA UNIV MINNEAPOLIS

Personal Author(s) : GOODMAN,L.E. ; BROWN,C.B.

Report Date : 31 DEC 1960

Pagination or Media Count : 1

Abstract : Modified apparatus was used to obtain measurements of energy dissipation per cycle at the contact between a flat plate and AISI 316 stainless steel spheres of variou diameters. T dissipation occurred when the specimens were subject to various constant normal loads and tangential oscillating loads in the range 0.45 less than delta/delta (max) less than 1, where delta is the tangential displacement amplitude and delta (max) the amplitude just prior to gross slip. The results agree well with the theoretical predictions of Mindlin and Deresiewicz (J. Appl. Mechanics, 20, 1953). Neither the sphere diameter nor the normal load magnitude appear as essential par meters. The results indicate the n cessity of u ing urf c ra her than bulk elastic constants in the determination of contact damping. (Author)

Descriptors :   *SLIDING CONTACTS, *STAINLESS STEEL, DAMPING, ELASTIC PROPERTIES, FRICTION, LABORATORY EQUIPMENT, LOAD DISTRIBUTION, MANAGEMENT ENGINEERING, MEASUREMENT, OSCILLOSCOPES, SHEAR STRESSES, SPHERES, SURFACES, THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE