Title :
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
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;
Conference_Titel :
Semiconductor Thermal Measurement and Management Symposium, 1995. SEMI-THERM XI., Eleventh Annual IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-2434-X
DOI :
10.1109/STHERM.1995.512050
