Influence of elastic and plastic contact models on the overall thermal resistance of bolted joints

Author

Mantelli, Marcia B H ; Sridhar, M.R. ; Yovanovich, M.M.

Author_Institution

Dept. of Mech. Eng., Waterloo Univ., Ont., Canada

fYear

1995

fDate

7-9 Feb 1995

Firstpage

39

Lastpage

47

Abstract

A bolted joint, which operates in vacuum is analyzed in this work. A resistance network, composed of material, contact and constriction resistances is presented for the overall thermal resistance of bolted joints. Thermal stress theory is used to determine contact stress variations with temperature level. Dimensional and non-dimensional forms of the thermal resistances and of the thermal stress models are given. Two contact resistance models, one based on the elastic and the other on the plastic deformation of contacting asperities, are used and their impact on the overall thermal resistance is studied

Keywords

contact resistance; packaging; thermal resistance; thermal stresses; bolted joints; constriction resistance; contact resistance; contact stress variations; contacting asperities; dimensional forms; elastic contact models; material resistance; nondimensional forms; overall thermal resistance; plastic contact models; resistance network; thermal stress theory; Contact resistance; Electronic packaging thermal management; Fasteners; Heat engines; Plastics; Resistance heating; Steel; Surface resistance; Thermal resistance; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Thermal Measurement and Management Symposium, 1995. SEMI-THERM XI., Eleventh Annual IEEE

Conference_Location

San Jose, CA

ISSN

1065-2221

Print_ISBN

0-7803-2434-X

Type

conf

DOI

10.1109/STHERM.1995.512050

Filename

512050