volume | PIER Journals

2024-06-21

Integrated Prediction of Condensation-Corrosion-Shielding Effectiveness of Metal Box with Gaps by Simulations

Jinjun Bai,

Dr. Jinjun Bai

College of Marine Electrical Engineering

Dalian Maritime University

China

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Xiaolong Li,

Dr. Xiaolong Li

College of Marine Electrical Engineering

Dalian Maritime University

China

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Jianshu Zhou,

Dr. Jianshu Zhou

College of Marine Electrical Engineering

Dalian Maritime University

China

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Ming Li

Dr. Ming Li

Aviation Industry Corporation of China (AVIC) AVIC Aero Polytechnol Estab

China

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Progress In Electromagnetics Research C, Vol. 144, 137-145, 2024

doi:10.2528/PIERC24050701

Abstract

With the advancement of the intelligent process, all kinds of electrical equipment are highly dense in space, and the impact of electromagnetic interference on high-precision electronic equipment cannot be ignored. Metal shielding shell is one of the effective means to reduce electromagnetic interference. The heat dissipation holes on the surface of the shielded box are often used to maintain the normal operating temperature of the internal equipment, which will reduce the electromagnetic shielding effectiveness of the box. At the same time, due to the existence of capillary effect, condensation is very easy to occur at the hole gap, and the corrosion caused by it will further reduce the overall shielding effectiveness of the metal box. At present, there are few studies on the integrated prediction of ``condensation-corrosion-shielding effectiveness'' of metal boxes. Based on the commercial multi-physics simulation software COMSOL, this paper first simulates the condensation of a metal box in a high-humidity environment by constructing temperature, humidity, and moisture transport fields. Then, the current field and deformation field are constructed to predict the corrosion phenomenon at the gap of the metal box, and finally the electromagnetic field is constructed to predict the electromagnetic shielding efficiency of metal boxes at different frequencies. The joint multi-physics coupling simulation of condensation, corrosion and electromagnetic shielding effectiveness phenomena is realized.

Citation

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Jinjun Bai, Xiaolong Li, Jianshu Zhou, and Ming Li, "Integrated Prediction of Condensation-Corrosion-Shielding Effectiveness of Metal Box with Gaps by Simulations," Progress In Electromagnetics Research C, Vol. 144, 137-145, 2024.
doi:10.2528/PIERC24050701

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