Magnetically optimization of mini-MR damper with focused on MR fluid properties and damper construction is investigated using dissipative particle dynamics method as a molecular scale modeling technique. To select a suitable MR fluid, the effect of diameter and weight of magnetic particles on damping force of 10 N as set point is studied. The results show damping force increases by increasing diameter of magnetic particles and finally trends to a constant value while changes nonparabolic by enhancement of their weight. The results of studies on structural parameters of damper show that by increasing gap size of flow passage, damping force increases while enhancement in inner diameter of cylinder and piston length has reverse effect. Optimum design of MR damper completed by investigation on electrical coils in terms of their arrangement and step wise distribution of magnetic field strength as our major innovation. To optimum operating conditions of MR damper at minimum electrical energy consumption and hysteresis level, the scenario of three segment coils in length of 3, 5, and 7 mm at base relative magnetic strength of 40% with 15% difference in steps by utilizing 140CG MR fluid as agent fluid are selected.

使用耗散粒子动力学方法作为分子尺度建模技术，研究了专注于 MR 流体特性和阻尼器结构的微型 MR 阻尼器的磁优化。为选择合适的磁流变液，研究了磁性粒子的直径和重量对 10 N 阻尼力作为设定值的影响。结果表明，阻尼力随着磁性粒子直径的增加而增加，最终趋于恒定值，而随着重量的增加而呈非抛物线变化。阻尼器结构参数研究结果表明，增加流道间隙尺寸，阻尼力增加，而增加气缸内径和活塞长度则相反。MR 阻尼器的优化设计是通过研究电线圈的排列和磁场强度的逐步分布来完成的，这是我们的主要创新。为了在最小的电能消耗和磁滞水平下优化 MR 阻尼器的运行条件，使用 140CG MR，在基础相对磁强度为 40%、步长差异为 15% 的 3、5 和 7 mm 三段线圈的情况下流体作为代理流体被选择。