Transactions of the ASME the Journal of Electronic Packaging, Vol. 121, pp. 286-290, December 1999

A Statistical Mechanical Model of Electrical Carbon Fiber Contacts

Jingsong Xie, Michael Pecht, Abhijit Dasgupta
CALCE-Electronic Products & Systems Center
University of Maryland
College Park, MD 20742, USA

Joseph A. Swift and Stanley J. Wallace
Xerox Corporation
Webster, NY 14580, USA


This paper presents a model for electrical carbon fiber contacts. In the model, a statistically distributed fiber length was considered at contact surfaces. A technique of dealing with this kind of contact surfaces with statistically determined, or specifically undeterminable, geometry was developed. The results were compared with the experimental data obtained previously. Also, the contact behaviors of electrical carbon fiber contacts were discussed and some specific contact properties, which were also observed experimentally, were clarified. A contact resistance decreasing rate was defined in a logarithmic-logarithmic scale coordinate. A constant-rate contact region was identified. The objective of this research is to provide a theoretical basis for the contact surface designs of electrical connectors.

Index Terms:

fiber length distribution, statistical mechanics, carbon fiber contact, contact resistance, normal force, contact resistance decreasing rate

Complete article is available to CALCE Consortium Members

[Home Page][Articles Page]