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超磁致伸缩材料(Giant Magnetostrictive Material,GMM)以其大磁致伸缩系数、快速时间响应及以高机电转换效率等特点可应用于多种场合,从而实现电能、磁能、机械能和热能等多个基本场之间的转化。基于多场耦合理论,首先系统地介绍了GMM与压电陶瓷等其他材料相比表现出的优异性能,以及在工程应用中这些性能与磁场强度、温度和频率等因素的关系。然后针对GMM在多场耦合下的耦合关系,介绍其建模分析中常用的各种数学模型及其优缺点,并以GMM中电、磁、机、热多场耦合为背景,分析其中需要特别关注的多场耦合效应。最后介绍国内外各工程领域中的GMM应用及其开发概况,以无线电能传输中的GMM多场耦合分析为例,剖析其原理、结构,阐述其基本性能,并对GMM未来的发展及应用领域作出展望。
Giant Magnetostrictive Material (GMM) can be applied to many kinds of applications with its large magnetostrictive coefficient, fast time response and high electromechanical conversion efficiency to realize a variety of applications such as electric energy, magnetic energy, mechanical energy and heat energy Transformation between basic fields. Based on the theory of multi-field coupling, firstly, the excellent performance of GMM in comparison with other materials such as piezoelectric ceramics is systematically introduced, and the relationship between these properties and magnetic field strength, temperature and frequency in engineering application is systematically introduced. Then based on the coupling relationship of GMM under multi-field coupling, various mathematical models commonly used in modeling and analysis are introduced, and their advantages and disadvantages are introduced. Based on the multi-field coupling in the GMM, Multi-field coupled effects of interest. Finally, the application and development of GMM in various engineering fields both at home and abroad are introduced. Taking multi-field coupling analysis of GMM in wireless power transmission as an example, the principle and structure of the GMM are analyzed and its basic performance is expounded. The future development and application of GMM Make a forecast.