Numerical Simulation for Electromagnetic Field Effect of Double-layer Fiber Composites

Abstract

To quantitatively reveal the internal correlation between material microstructure and electromagnetic (EM) field effect by incident EM waves, and to solve the question as to why the numerical simulation research method at present cannot calculate the layered reflectivity and layered absorptivity of double-layer composites, numerical simulations were realized by means of program design and the finite element method. Double-layer fiber composites microstructure is designed. Using the Poynting vector method, the normal reflectivity, transmissivity and absorptivity, the layered reflectivity and layered absorptivity, and the reflectivity for different reflection angles of the double-layer composites are all calculated. The results show that the double-layer fiber composites have a stable EM field effect in a wide frequency range, and the EM energy is most concentrated in the first layer of the double-layer composites. The research method is suitable for any multi-layer composite microstructures.