新型微纳米磁流变液及其性能研究

发布时间：2018-06-15 22:33

本文选题：微纳米磁流变液 + 测试系统　；参考：《上海应用技术学院》2015年硕士论文

【摘要】：一种新型智能材料—磁流变液,因其具有特殊的流变性能,且在阻尼器等器件应用中响应时间短(毫秒数量级)和工作温度范围宽泛等优点,近年来被广泛关注。基于磁流变液的器件,如阻尼器、离合器等被广泛应用到航空航天、车辆工程、建筑设施和武器装备等领域。根据磁流变液组分之一的导磁性颗粒划分磁流变液为普通微米磁流变液和纳米磁流变液。新型微纳米磁流变液组分中,导磁性颗粒有两种尺寸规格,既有微米级导磁颗粒也有纳米级导磁性颗粒,这种新型微纳米磁流变液在配制过程中与普通磁流变液的传统配制方法类似。微观机理方面,由于存在纳米铁磁性颗粒,在微纳米磁流变液的微观机理建模时候,考虑两种颗粒的不同粒径,建立新的微观机理模型。研究工作分为两个部分,第一部分,从磁流变液流变性机理、组成成分、配比以及影响因素等着手,配制新型微纳米磁流变液。第二部分,设计一套微纳米磁流变液力学性能测试系统,测试并分析这种新型磁流变液的三个重要参数：法向力、动态响应时间和剪切屈服应力,并与普通微米磁流变液进行了对比。结果表明,新型微纳米磁流变液具有较快的动态响应,一定配比的微纳米磁流变液具有优越的力学性能。
[Abstract]:Magnetorheological fluid (MRF), a new type of intelligent material, has been widely concerned in recent years because of its special rheological properties, short response time (millisecond order of magnitude) and wide range of operating temperature in the applications of dampers and other devices. Devices based on MRF, such as dampers and clutches, are widely used in aerospace, vehicle engineering, building facilities and weapons and equipment. The magneto-rheological fluids are divided into ordinary micron magnetorheological fluids and nano-magnetorheological fluids according to the magnetic conductivity particles of one component of the magnetorheological fluid. Among the components of the new micro and nano magnetorheological fluid, there are two sizes of magnetic conductance particles, both micron and nanometer. The new micro-nano-magnetorheological fluid is similar to the traditional preparation method of general magnetorheological fluid in the process of preparation. In terms of microscopic mechanism, because of the existence of nano-ferromagnetic particles, a new micro-mechanism model was established in the modeling of micro-mechanism of micro-nano-magnetorheological fluid (MRF), considering the different particle sizes of the two kinds of particles. The research work is divided into two parts. In the first part, a new type of micro and nano-magnetorheological fluid is prepared from the rheological mechanism, composition, proportion and influencing factors of magnetorheological fluids. In the second part, a set of testing system for the mechanical properties of micro and nano magnetorheological fluids is designed, and three important parameters of the new MRF are tested and analyzed: normal force, dynamic response time and shear yield stress. And compared with ordinary micron magnetorheological fluid. The results show that the new micro-nano magnetorheological fluid has a fast dynamic response and a certain ratio of micro-nano magnetorheological fluid has superior mechanical properties.
【学位授予单位】：上海应用技术学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB381

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