Analysis of electromagnetic pulse shielding effectiveness of shielding composite equipment cabin based on simulated annealing algorithm

The continuous development of advanced composite materials technology has promoted its application research in new equipment, especially in equipment electromagnetic pulse protection design, which has begun to replace traditional metal materials and become an important alternative in design selection. On the basis of preparing the sample cabin of aluminum-coated glass fiber anti-electromagnetic pulse composite equipment cabin, this paper puts forward a time-domain test method of electromagnetic pulse shielding effectiveness of materials based on simulated annealing algorithm, and measures the time-domain wave forms of shielding materials under the excitation of standard square wave pulse sources with different peak values and pulse widths, and calculates the shielding effectiveness of materials in frequency domain. Finally, the shielding effectiveness of equipment cabin under nuclear electromagnetic pulse is studied. The test results show that the time domain test method of shielding effectiveness based on simulated annealing algorithm has good applicability and repeatability, and can provide more detailed information than the frequency domain test method.