求一篇关于磁流变液的英文文献,并带中文翻译,

求一篇关于磁流变液的英文文献,并带中文翻译,

Magnetorheological fluid knowledge
1,magnetorheological fluid definition
MRF (Magnetorheological Fluid,referred to MR fluid) is controllable fluid,is smart materials in the study of a more active.Magnetorheological fluid is high permeability rate,low hysteresis of the tiny magnetic particles soft and non-derivative magnetic liquid mixture of suspension.
This suspension is in the magnetic field under the conditions showing a low viscosity of the fluid characteristics of Newton and in strong magnetic field,while showing a high-viscosity,low liquidity of the Binghan characteristics.
As magnetorheological fluid in the evolution of magnetic field is the moment,irreversible,and the flow after the yield shear strength and stability of the magnetic field strength of relationship,is a widely used,high-performance smart materials.
2,the scope of application of MRF
At present,the MRF has already begun for grinding (polished) process,valves and seals,family fitness,mechanical hand grasping the body,the assembly workshop of the irregular shape of relying on planes,as well as automated instrumentation,the robot's sensors and mining ,Printing and other industries.
In its many applications,the largest research and development applications is the fastest car seat shock absorber,brakes,drive and initiative soil-body shock absorber.
3,magnetorheological fluid should meet the targets
(1) magnetic field,low viscosity in order to make it in the magnetic field,has the same yield shear strength of growth,a greater range adjustable.
(2) strong magnetic field under the shear yield strength,should reach at least 20 30 Kpa,which is a measure of magnetorheological fluid characteristics of one of the key indicators.
(3) impurity interference small,to increase their scope of use.
(4) wide temperature range,that is,in a wide temperature range with high stability.
(5) fast response,the best can achieve milliseconds,so that the magnetorheological fluid damper as active and semi-active controller,the basic problem does not exist at the latest.
(6) of the anti-settlement,and should be stored for a long time not stratified.
(7) low energy consumption,the weak magnetic field can have a greater yield shear strength.
(8) non-toxic,non-volatile,no smell,which is determined by the applications.
4,magnetorheological fluid characteristics of the shock absorber
(1) magnetorheological fluid damper accurate real-time control
(2) consecutive irreversible changes in the damping force
(3) low-voltage low-power
(4) industrial-grade stability and durability
(5) the simple structure of the Electrical and Mechanical
(6) long life
磁流变液相关知识
1、磁流变液定义
磁流变液（Magnetorheological Fluid ,简称MR流体）属可控流体,是智能材料中研究较为活跃的一支.磁流变液是由高磁导率、低磁滞性的微小软磁性颗粒和非导磁性液体混合而成的悬浮体.
这种悬浮体在零磁场条件下呈现出低粘度的牛顿流体特性；而在强磁场作用下,则呈现出高粘度、低流动性的Binghan体特性.
由于磁流变液在磁场作用下的流变是瞬间的、可逆的、而且其流变后的剪切屈服强度与磁场强度具有稳定的对应关系,因此是一种用途广泛、性能优良的智能材料.
2、磁流变液应用范围
目前,磁流变液已经开始应用于研磨（抛光）工艺、阀门和密封、家庭健身器、机械手的抓持机构、装配车间不规则形体的依托架、以及自动化仪表、机器人的传感器和采矿、印刷等行业.
在其众多应用领域当中,研究最多、发展最快的应用领域是汽车座位减振器、刹车器、主动驱动器以及土模机构减振器.
3、磁流变液应满足的指标
（1）零磁场粘度低,以便使其在磁场作用下,具有同等剪切屈服强度增长时,具有更大的可调范围.
（2）强磁场下剪切屈服强度高,至少应达到20～30Kpa,这是衡量磁流变液特性的主要指标之一.
（3）杂质干扰小,以增加其使用范围.
（4）温度使用范围宽,即在相当宽的温度范围具有极高的稳定性.
（5）响应速度快,最好能达到毫秒级,以使磁流变液减振器作为主动和半主动控制器时,基本不存在时迟问题.
（6）抗沉降性好,长时间存放应基本不分层.
（7）能耗低,在较弱的磁场下可产生较大的剪切屈服强度.
（8）无毒、不挥发、无异味,这是由其应用领域所决定的.
4、磁流变液减振器的特点
（1）磁流变液减振器精确的实时控制
（2）连续可逆变化的阻尼力
（3）低电压低功耗
（4）工业级的稳定性和耐久性
（5）简洁的机电结构
（6）使用寿命长