分层式磁流变力矩传动装置的研究

发布时间：2018-04-25 13:38

本文选题：磁流变效应 + 力矩传动　；参考：《吉林大学》2012年硕士论文

【摘要】：磁流变液（Magneto-rheological Fluids）是一种新型智能材料，它能够在外加磁场中瞬间改变流体本身的特性以及流变行为，由液态变为固态，，且此流变过程可逆可控，鉴于其优良的流变特性，磁流变流体已经成为当今新型智能材料研究的一个重要分支和核心，同时也成为最具发展潜力的流体材料。磁流变液装置依靠磁流变流体本身的流变特性，在外加磁场的作用下，改变磁流变流体的表观粘度，使其从液态瞬间向固态转变，主要表现为Bingham塑性体行为；通过由此过程产生的剪切屈服应力来传递输出可变扭矩。论文通过对传统磁流变传动模式和分层式传动模式进行了对比，系统的研究了磁流变传动理论，对分层式磁流变传动装置的磁路结构进行了有限元仿真，通过对现有圆盘式磁流变力矩装置的分析和研究，论文在试验的基础上研制了分层式磁流变力矩传动装置，并对其进行了相关力矩传动性能试验。论文主要在以下五个方面展开研究： 1.论文首先结合课题的来源，阐述课题与论文的意义。介绍国内外磁流变液研究现状和应用发展趋势，提出论文的主要目的和主要内容。 2.论文系统地分析了磁流变液的流变效应和流变理论，详细阐述了磁流变液在外加磁场作用下微观和宏观上，磁流变液中的磁性固体颗粒的链化过程；同时介绍了磁流变液的组成及分类，阐明了磁流变液各项性能指标、影响因素以及基本参数。 3.论文分析了现有磁流变传动器件的工作模式及原理，在研究圆盘式力矩传动装置的结构的基础上，对比分析了分层式磁流变力矩传动装置的特点，推导出分层式磁流变力矩传动的力矩输出模型；从整体上提出分层式磁流变液力矩传动装置的结构方案；讨论并制定出解决分层式装置散热问题的相关措施。 4.介绍磁学仿真的相关理论，通过ANSYS有限元分析软件对初步提出的分层式力矩传动装置结构方案进行了理论仿真和模拟计算，对比圆盘式和多层式磁力线、磁感应强度等相关参数的优缺点，为分层式力矩传动装置的样机试制提供理论依据。 5.根据分层式力矩传动装置的基本结构参数研制分层式磁流变力矩传动装置样机，并建立试验样机参数性能测试平台，对比并测试分层式磁流变装置样机在不同激励电流、不同驱动转速下输出的可控力矩与圆盘式力矩装置的区别。通过试验结果对比分析，分层式磁流变力矩装置提高了输出力矩范围。
[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.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.33

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