Study on the Temporal and Spatial Characteristics of Transient Temperature in Electromagnetic Emission System

Since the proposal of the strategy in strengthening the country with science and technology, electromagnetic emission technology has gained wider and wider application in military, aviation, industry and other fields. Clarifying the thermal damage mechanism of the armature-rail under extreme impact conditions and improving the reuse rate and service life of the device have become a hotspot for researchers at home and abroad. Based on previous achievements, this paper adopts finite element simulation methods to establish a more comprehensive three-dimensional model of the electromagnetic launch system. The temporal and spatial distribution characteristics of the transient temperature at the armature-rail interface are investigated under the coupling analysis of electromagnetic thermal multi-physical field. Furthermore, the influence of externally applied current waveform on temperature peak is analyzed, and the temperature rise mechanism is also analyzed based on the theories such as heat source and skin effect. The series of studies conducted are of great significance for clarifying the working performance of electromagnetic emission systems and guiding the manufacturing, operation and maintenance of the equipment.