基于有限元分析的换能器磁致伸缩性能研究

发布时间：2018-05-09 20:12

本文选题：磁致伸缩 + 换能器　；参考：《哈尔滨理工大学》2015年硕士论文

【摘要】：在这个飞速发展的社会，新的材料如雨后春笋般的被发现和应用，而智能材料作为其中的佼佼者进入人们的视野和生活中，作为智能材料的代表材料——超磁致伸缩材料（GMM）是可以进行能量互换的功能性材料，它的性能优越，拥有可控制能力强、较快的应变速度、简单的驱动形式、应变所造成的位移大等诸多优点，这使它相比于其他材料有着更加广泛的应用与发展前景。其中换能器方面的应用占据主要部分，人们根据其特性研发出了不同特性的换能器，超磁致伸缩换能器相比其他的换能器拥有更大的位移范围，更小的工作电压，，更广的应用范围，更高的机械强度，更大的功率以及较小的器件体积。论文阐述了超磁致伸缩材料的基本特性以及其基本原理，然后对换能器的工作原理进行了阐述，对换能器的整个磁路的结构进行了设计，其次对超磁致伸缩换能器进行电磁场以及结构场的有限元分析，得出磁致伸缩材料的磁场分布情况以及能量损耗值，然后将所受到的磁场力作为载荷施加到棒材上进行结构场分析，得出应变值。研究了换能器在不同的电流频率、电压强度、外部磁轭下的磁致伸缩性能，并对其能量损耗进行了分析。通过本文的研究，分析了外部场强及棒材尺寸对换能器磁致伸缩性能的影响。研究结果对磁致伸缩换能器的设计和应用具有参考意义。
[Abstract]:In this rapidly developing society, new materials have been found and applied like bamboo shoots after a spring rain, and smart materials as the best of them enter people's vision and life. As the representative material of smart material, giant magnetostrictive material (GMMM) is a functional material that can exchange energy. It has excellent performance, has strong controllable ability, fast strain rate, simple driving form. The displacement caused by strain has many advantages, which makes it more widely used and developed compared with other materials. Among them, the application of transducer occupies a major part. According to its characteristics, people have developed different characteristic transducers. Giant magnetostrictive transducers have a larger displacement range and smaller working voltage than other transducers. Wider range of applications, higher mechanical strength, greater power, and smaller device volume. In this paper, the basic characteristics and principle of giant magnetostrictive material are described, then the working principle of the transducer is expounded, and the structure of the whole magnetic circuit of the transducer is designed. Secondly, the magnetic field distribution and energy loss of magnetostrictive material are obtained by finite element analysis of electromagnetic field and structure field of giant magnetostrictive transducer. Then the applied magnetic field force is applied to the bar to analyze the structure field and the strain value is obtained. The magnetostrictive properties of the transducer under different current frequency, voltage intensity and external yoke are studied, and its energy loss is analyzed. The effects of external field strength and bar size on the magnetostrictive properties of the transducer are analyzed. The results are useful for the design and application of magnetostrictive transducer.
【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB34

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