The finite element model (FEM) analysis of thermal failure in connector

Thermal analysis and thermal diagnose is important for small power connector especially in electronic devices since its structure is usually compactly. In this paper thermal behavior of small power connector was investigated. It was found that the contact resistance increased due to the Joule heating, and increased contact resistance produced more Joule heating, this mutual action leads connector to lose efficacy. The thermal distribution in the connector was analyzed using FEM. And mechanism of failure was discussed. It provides structure improving basis. The conclusion was verified by experimental results.