李杰如^*

（  河海大学工程力学系；  ）

摘要： 本文通过分析磁流变液中固体颗粒的受力，利用分子动力学中的速度Verlet算法，建立了磁流变液链化过程的二维模拟程序，得出以下一些结论：沿y方向排列而不接触的两个粒子不断的相互靠近，沿x方向排列且相互接触的两个粒子不断的相互远离，颗粒的总体运动趋势由其所受合力决定，粒子的运动最终会在模拟区域内形成若干条几乎平行的链。颗粒链化时的变化过程先快后慢。整个链化过程所耗费的时间在2-3 之间。颗粒体积百分率越大，模拟时所成通链越多。
关键词： 磁流变液；微观结构；数值模拟；链化

Li Jieru^*

（  College of Civil Engineering, Hohai University；  ）

Abstract： In this paper, we analysis some stress of the solid particle, use the Velocity Verlet arithmetic, to base the simulator of two dimension for the process of turning the chains and the chains shear of the MRF. We get some conclusions as shows: Two solid particles distributing followed the y direction but not contact, closed with each other continuously, two solid particles distributing followed the x direction and contact whit each other, mutually keep off continuously. The total sport trend of the particles is decided by the resultant force that it subjected. The particles formed some almost parallel chains in the simulation district in the end of the simulation. The variety process of the particles turns to chains, is quickly in the beginning and slowly in the end .The whole time that the process just using about 2-3 milliseconds. The volume percentage of the particles is bigger the whole chain is more many.

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