Title :
Formation of Tubular Crimp Connections: Elementary Considerations
Author_Institution :
Timron Adv. Connector Technol., Toronto, ON
Abstract :
The paper reviews the fundamental principles of mechanical crimp connections and provides a simple predictive model for achieving acceptable tubular crimps with a solid conductor. This model is based on well- established strain-strain relationships of cylindrical bodies in elasticity mechanics. The model is used to relate the residual contact load in the crimp junction to the mechanical yield strength and elastic springback properties of both the conductor and the crimp barrel. It is shown that the relative yield strength and relative elastic modulus of the materials in contact must meet specific conditions to achieve a crimp junction with acceptable strength and electrical contact resistance. The paper also provides an explanation for the minimum compaction required to achieve a reliable electrical crimp connection in stranded wire connections.
Keywords :
elastic moduli; elasticity; electrical contacts; mechanical contact; stress-strain relations; yield strength; contact properties; elastic springback properties; elasticity mechanics; electrical contact resistance; mechanical crimp connections; mechanical yield strength; relative elastic modulus; relative yield strength; residual contact load; solid conductor; strain-strain relationships; tubular crimp connections; Compaction; Conducting materials; Conductors; Contact resistance; Elasticity; Electric resistance; Mechanical factors; Predictive models; Solids; Wire;
Conference_Titel :
Electrical Contacts, 2008. Proceedings of the 54th IEEE Holm Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1901-2
Electronic_ISBN :
978-1-4244-1902-9
DOI :
10.1109/HOLM.2008.ECP.39
