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  本文選題：磁流變效應 + 力矩傳動��； 參考：《吉林大學》2012年碩士論文

【摘要】：磁流變液（Magneto-rheological Fluids）是一種新型智能材料，它能夠在外加磁場中瞬間改變流體本身的特性以及流變行為，由液態(tài)變?yōu)楣虘B(tài)，，且此流變過程可逆可控，鑒于其優(yōu)良的流變特性，磁流變流體已經成為當今新型智能材料研究的一個重要分支和核心，同時也成為最具發(fā)展?jié)摿Φ牧黧w材料。磁流變液裝置依靠磁流變流體本身的流變特性，在外加磁場的作用下，改變磁流變流體的表觀粘度，使其從液態(tài)瞬間向固態(tài)轉變，主要表現(xiàn)為Bingham塑性體行為；通過由此過程產生的剪切屈服應力來傳遞輸出可變扭矩。論文通過對傳統(tǒng)磁流變傳動模式和分層式傳動模式進行了對比，系統(tǒng)的研究了磁流變傳動理論，對分層式磁流變傳動裝置的磁路結構進行了有限元仿真，通過對現(xiàn)有圓盤式磁流變力矩裝置的分析和研究，論文在試驗的基礎上研制了分層式磁流變力矩傳動裝置，并對其進行了相關力矩傳動性能試驗。 論文主要在以下五個方面展開研究： 1.論文首先結合課題的來源，闡述課題與論文的意義。介紹國內外磁流變液研究現(xiàn)狀和應用發(fā)展趨勢，提出論文的主要目的和主要內容。 2.論文系統(tǒng)地分析了磁流變液的流變效應和流變理論，詳細闡述了磁流變液在外加磁場作用下微觀和宏觀上，磁流變液中的磁性固體顆粒的鏈化過程；同時介紹了磁流變液的組成及分類，闡明了磁流變液各項性能指標、影響因素以及基本參數。 3.論文分析了現(xiàn)有磁流變傳動器件的工作模式及原理，在研究圓盤式力矩傳動裝置的結構的基礎上，對比分析了分層式磁流變力矩傳動裝置的特點，推導出分層式磁流變力矩傳動的力矩輸出模型；從整體上提出分層式磁流變液力矩傳動裝置的結構方案；討論并制定出解決分層式裝置散熱問題的相關措施。 4.介紹磁學仿真的相關理論，通過ANSYS有限元分析軟件對初步提出的分層式力矩傳動裝置結構方案進行了理論仿真和模擬計算，對比圓盤式和多層式磁力線、磁感應強度等相關參數的優(yōu)缺點，為分層式力矩傳動裝置的樣機試制提供理論依據。 5.根據分層式力矩傳動裝置的基本結構參數研制分層式磁流變力矩傳動裝置樣機，并建立試驗樣機參數性能測試平臺，對比并測試分層式磁流變裝置樣機在不同激勵電流、不同驅動轉速下輸出的可控力矩與圓盤式力矩裝置的區(qū)別。通過試驗結果對比分析，分層式磁流變力矩裝置提高了輸出力矩范圍。
[Abstract]:Magneto-rheological fluid (Magneto-rheological fluid) is a new kind of intelligent material, which can change the fluid's characteristics and rheological behavior in a moment in an external magnetic field, from liquid to solid, and the rheological process is reversible and controllable, in view of its excellent rheological properties. Magneto-rheological fluid has become an important branch and core of modern intelligent materials, and has become the most potential fluid materials. The magnetorheological fluid device depends on the rheological characteristics of the magnetorheological fluid itself and changes the apparent viscosity of the magnetorheological fluid under the action of the external magnetic field to make it change from the liquid to the solid state, which is mainly the behavior of the Bingham plastic body. The output variable torque is transmitted by the shear yield stress generated by the process. By comparing the traditional magneto-rheological transmission mode with the stratified transmission mode, the magneto-rheological transmission theory is systematically studied, and the finite element simulation of the magnetic circuit structure of the layered magnetorheological transmission device is carried out. Based on the analysis and research of the existing disk magneto-rheological torque device, this paper develops the layered magnetorheological torque transmission device on the basis of the experiment, and carries on the related torque transmission performance test to it. The thesis mainly carries out the research in the following five aspects: 1. At first, the thesis expatiates the significance of the subject and the paper in combination with the source of the subject. The research status and application trend of magnetorheological fluids at home and abroad are introduced, and the main purpose and content of this paper are put forward. 2. In this paper, the rheological effect and rheological theory of magnetorheological fluids are systematically analyzed, and the chaining process of magnetic solid particles in magnetorheological fluids under the action of external magnetic field is described in detail. At the same time, the composition and classification of MRF are introduced, and the performance indexes, influencing factors and basic parameters of MRF are expounded. 3. This paper analyzes the working mode and principle of the existing Mr transmission device. On the basis of studying the structure of the disk torque transmission, the characteristics of the layered MRT are compared and analyzed. The torque output model of layered Mr torque transmission is derived, the structural scheme of layered MRF torque transmission device is put forward as a whole, and the relevant measures to solve the heat dissipation problem of delamination device are discussed and worked out. 4. This paper introduces the related theory of magnetic simulation, carries on the theoretical simulation and simulation calculation to the structure scheme of layered torque drive put forward preliminarily by ANSYS finite element analysis software, compares the magnetic force line of disk type and multi-layer type, and compares the magnetic force line of disc type and multi-layer type. The advantages and disadvantages of the related parameters such as magnetic induction intensity provide a theoretical basis for the trial production of the prototype of the layered torque drive. 5. According to the basic structure parameters of the layered torque drive, the prototype of the layered magnetorheological torque transmission is developed, and the performance test platform of the test prototype is established, and the different excitation current of the delaminated MRT prototype is compared and tested. The difference between the output controllable torque and the disc torque device at different driving speeds. By comparing and analyzing the experimental results, the output torque range of the layered magnetorheological torque device is improved.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH137.33

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本文編號：1801563