Thermoelastic Instabilities in Sliding Contact.
Abstract
Thermoelastic instability in rubbing contact is shown to be a consequence of the interaction of frictional heating, thermal expansion, conduction of heat from the contact zone, and wear. It manifests itself as a departure of the pressure distribution from a nominally uniform magnitude, as a result of the amplification of small disturbances. Such an instability is investigated here for two models of surface contact; (a) one-dimensional pin model and (b) two-dimensional blade model. The effects of materials, friction coefficients, severity of wear and sliding speed are delineated with respect to disturbance amplification or damping. The long-term growth of a disturbance is described and the resulting hot spot motion is explained. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 18, 1972
- Accession Number
- AD0743117
Entities
People
- Ralph A. Burton
- Thomas A. Dow
Organizations
- Northwestern University