本文選題：磁致伸縮 + 換能器　； 參考：《哈爾濱理工大學(xué)》2015年碩士論文

【摘要】：在這個(gè)飛速發(fā)展的社會(huì)，新的材料如雨后春筍般的被發(fā)現(xiàn)和應(yīng)用，而智能材料作為其中的佼佼者進(jìn)入人們的視野和生活中，作為智能材料的代表材料——超磁致伸縮材料（GMM）是可以進(jìn)行能量互換的功能性材料，它的性能優(yōu)越，擁有可控制能力強(qiáng)、較快的應(yīng)變速度、簡(jiǎn)單的驅(qū)動(dòng)形式、應(yīng)變所造成的位移大等諸多優(yōu)點(diǎn)，這使它相比于其他材料有著更加廣泛的應(yīng)用與發(fā)展前景。其中換能器方面的應(yīng)用占據(jù)主要部分，人們根據(jù)其特性研發(fā)出了不同特性的換能器，超磁致伸縮換能器相比其他的換能器擁有更大的位移范圍，更小的工作電壓，，更廣的應(yīng)用范圍，更高的機(jī)械強(qiáng)度，更大的功率以及較小的器件體積。 論文闡述了超磁致伸縮材料的基本特性以及其基本原理，然后對(duì)換能器的工作原理進(jìn)行了闡述，對(duì)換能器的整個(gè)磁路的結(jié)構(gòu)進(jìn)行了設(shè)計(jì)，其次對(duì)超磁致伸縮換能器進(jìn)行電磁場(chǎng)以及結(jié)構(gòu)場(chǎng)的有限元分析，得出磁致伸縮材料的磁場(chǎng)分布情況以及能量損耗值，然后將所受到的磁場(chǎng)力作為載荷施加到棒材上進(jìn)行結(jié)構(gòu)場(chǎng)分析，得出應(yīng)變值。研究了換能器在不同的電流頻率、電壓強(qiáng)度、外部磁軛下的磁致伸縮性能，并對(duì)其能量損耗進(jìn)行了分析。通過(guò)本文的研究，分析了外部場(chǎng)強(qiáng)及棒材尺寸對(duì)換能器磁致伸縮性能的影響。研究結(jié)果對(duì)磁致伸縮換能器的設(shè)計(jì)和應(yīng)用具有參考意義。
[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.
【學(xué)位授予單位】：哈爾濱理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB34

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