The Basic Modeling、finite Element Analysis And Optimization Of The Connector’s Thermal Design

As the important electronic equipment, connectors charged with the important task to Unicom the signal between parts of devices. The reliability of the connector affects the safety and reliability of the equipment. With the connector’s miniaturization, intelligent and integrated development trends, it is very important to control the temperature rise and make sure that it does not exceed the highest temperature limit. And it is particularly important to ensure thermal reliability and security of the connector.This issue creates the heat transfer model of the connector based on the analysis of the structure of the coaxial connector and cooling:it is heat conduction cooling inside the connector and convection cooling on the surface of the connector. And according to the structure of the connector, the calculation formula for the thermal distribution of the connector could be found. The temperature filed in different work load vale could be calculated by the calculation formula.Use the Pro/E to create three-dimensional model for the connector, and get the solid model of the coaxial connector. According to the effects about the structure to the temperature filed, different cut slits on the connector socket and pin housing divide them into different parts, and to create ten different connector solid models. Use ANSYS Workbench to analysis thermal-structure coupling simulation of the connector. Analysis40different types of simulation model with different work-loads based on the ten different solid models. Find the maximum temperature, minimum temperature points and the location of those two temperature extremes from the temperature filed. And obtain the effects of the structure of the connector to the temperature filed. The results show that, in the case of constant contact resistance, the structure of the connector has little effect on its temperature field, but increases with increasing work load.Build the connector temperature test system. In the test system, the platinum resistance temperature sensor PT100has been used to measure the temperature on the surface of the connector socket. Solve the fixed problem of how to fix the temperature sensor inside the connector. Temperature rise test has been tested in case of different work-loads, and the results show that the temperature rise could match the result of the simulation and the theoretical calculation.Compare the results of the theoretical calculation, the simulation and the temperature test. The comparing result shows that they have a good consistency. The basic modeling and finite element simulation of the thermal design can reflect the effects of the number of connector contact points and the contact position to the connector’s temperature field.