Method for analyzing electromagnetic radiation characteristics of piezoelectric ceramic material

Abstract

The invention provides a method for analyzing the electromagnetic radiation characteristics of a piezoelectric ceramic material and belongs to the field of computational electromagnetic analysis. According to the method for analyzing the electromagnetic radiation characteristics of the piezoelectric ceramic material, the interaction process between induction elastic waves and electromagnetic waves under the action of microwaves is accurately described by solving coupled Maxwell equations and an elastic wave equation. The method is different from a traditional method that coupled equations are deduced in a partial differential equation mode. By the adoption of the method, an excitation source of elastic waves is taken as electromagnetic force, generated induction elastic waves are taken as an excitation source and influence original electromagnetic waves in turn, the electromagnetic wave portion and the elastic wave portion of an integral equation are deduced based on the Huygens equivalence principle and the extinction theorem, the electromagnetic wave portion and the elastic wave portion are coupled through the excitation source, and the Nystrom method is introduced to solve the coupled integral equations for the first time. The piezoelectric ceramic is a polycrystal having the piezoelectric performance and is an important part of information functional ceramic. The method for analyzing the electromagnetic radiation characteristics of the piezoelectric ceramic material has quite important significance in research and development of a high-performance high-precision piezoelectric ceramic material.

Description

technical field [0001] The invention relates to the field of computational electromagnetic analysis, in particular to a piezoelectric ceramic material object, which performs fast and accurate electromagnetic characteristic analysis on the coupling properties of electromagnetic and fluctuation. technical background [0002] Piezoelectric ceramics are functional ceramic materials that can convert mechanical energy and electrical energy, and belong to inorganic non-metallic materials. Piezoelectric ceramics are made by using their materials under the action of mechanical stress to cause the relative displacement of the internal positive and negative charge centers to cause polarization, resulting in the appearance of bound charges with opposite signs on the surface of the material, that is, the piezoelectric effect. It has sensitive characteristics. Ceramics are mainly used in the manufacture of ultrasonic transducers, underwater acoustic transducers, electroacoustic transducer...

AI Technical Summary

Problems solved by technology

[0004] The research on the interaction between electromagnetic waves and piezoelectric materials began with the paper "Wave propagation in piezoelectric crystals" published by the scientist Kyame in 1949. Since then, many people have studied it, but all the solution methods are based on coupled Maxwell's equations and elastic waves. The partial differential equation form of the equation, so it can only be solved using partial differential equation solving methods, such as finite element method, finite difference method

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