Steady-state thermal analysis simulation of magnetic holding relay contact based on Finite element analysis

In this paper, ANSYS Workbench software is used to perform steady-state thermal analysis of a magnetic holding relay. The solid model of the magnetic holding relay is established and the contact surface part is simplified. At the same time, the internal heat source and boundary conditions are established and the corresponding load is applied. The distribution of Joule heat generated between the contact surfaces when the contact surface changes with the current level after repeated short-time work. At the same time, the idea of equivalent point contact is used to obtain the contact resistance between the contact surface of the contact and its relationship with the current level, which provides design and optimization basis for subsequent research on the magnetically held relay contact portion.