Accession Number:

AD0768196

Title:

Thermoelastic Instability in a Seal-Like Configuration.

Descriptive Note:

Annual rept.,

Corporate Author:

NORTHWESTERN UNIV EVANSTON ILL DEPT OF MECHANICAL ENGINEERING AND ASTRONAUTICAL SCIENCES

Report Date:

1973-09-01

Pagination or Media Count:

118.0

Abstract:

The report comprises five independent studies leading progressively to an understanding of the thermoelastic behavior of sliding contacts. To be specific it deals with a seal-like configuration consisting of two tubes, contacting end to end. The effects of materials variation, oxide films and initial departures from flatness are investigated and, as will be shown, the conditions under which surface contact departs from its initial state are delineated. The ultimate high-sliding-speed configuration of isolated contact patches separated by non contacting surfaces is treated, and both contact temperature of the patches and leakage in the gaps between are dealt with analytically. To the extent that the simplified geometry and materials choices represent real seals, the analytical results lead toward design criteria for practical applications. Author

Subject Categories:

  • Adhesives, Seals and Binders
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE