母液对磁流变液力学性质的影响  

Influence of Motherliquor on Mechanical Property of Magnetorheological Fluid

作　　者：周小清[1] 邬云文[1] 

机构地区：[1]吉首大学,湖南吉首416000

出　　处：《应用力学学报》2007年第2期223-226,共4页Chinese Journal of Applied Mechanics

基　　金：湖南省自然科学基金(03JJY6015)

摘　　要：研究了磁流变液中母液分子在磁场作用下磁矩的变化以及由此引起的剪切屈服强度的变化,探讨了磁流变的微观机理。研究表明,由分子磁矩引起的剪切屈服强度与磁流变液总屈服强度的比随母液分子内电子数的增加而增加,一般情况下,单位体积内的平均分子磁矩占总磁矩的2·53%,由此引起的剪切屈服强度的减少占总剪切屈服强度的5·15%。为减少误差,可尽量选用电子数较少的分子材料作母液。Variety in the molecular magnetic moment of motherliquor and the shear yield strength due to the molecular is investigated in magnetorheological fluid, and the rheological microcosmic mechanism is explored. It found that the ratio of shear yield strength due to molecular increases with the electronical number. Under the general condition, the ratio of average molecular magnetic moment gets to 2.53% in unit volume, shear yield strength due to the molecular magnetic moment decreases by 5.15% of the tatal, so molecule with less electrons is suggested for motherliquor to reduce the error.

关 键 词：磁流变液 分子磁矩 剪切屈服强度 

分 类 号：O361[理学—流体力学] O369[理学—力学]