Abstract: To analyze the interaction between mechanical structure and electromagnetism, the concept of coupled problems and its mechanical-electromagnetic coupling model are presented. This model can be simulated based on the same discrete meshes. Because the required mesh sizes of the geometry are allowed due to the precision of electromagnetic analysis, the number of meshes is increased by the iterative method to decrease the increscent mesh sizes in the process of structural analysis. Then the effect of the structural distortion on electromagnetism can be obtained by the method of moment. Finally, the given model is applied in an electromagnetic scatting and an antenna’s radiation. The obtained results prove that the effect of the structural distortion on electromagnetism is not negligible. This study can be used for the design of structure and electromagnetism.

Key words: mechanical engineering, electromagnetism, mechanical-electromagnetic coupling model, discrete meshes, iterative methods