Magnetorheological (MR) damper is a semi-active control device designed by utilizing the instantaneous fluid-solid conversion characteristics of MR fluid, thus the microstructure of MR fluid fundamentally determines the mechanical properties of MR dampers. In order to study the influence of MR fluid microstructure on the macroscopic mechanical properties of MR dampers, a micro-macro mathematical model for MR dampers was proposed to describe the dynamic properties of MR dampers affected by the microstructure of MR fluid. Firstly, the micromodel of MR fluid was brought into classic quasi-static model and the double-Sigmoid model to propose a mathematical model, which considers the MR fluid microstructure by expressing the yield force parameter in the traditional double-Sigmoid model with the microstructure parameters of MR fluid. By analyzing the data of the performance test of a single-coil MR damper, the parameters of the proposed mathematical model were fitted. The proposed mic...

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磁流变流体微观结构对磁流变阻尼器力学性能的影响分析

磁流变（MR）阻尼器是一种利用MR流体的瞬时流固转换特性设计的半主动控制装置，因此MR流体的微观结构从根本上决定了MR阻尼器的机械性能。为了研究MR流体的微观结构对MR阻尼器宏观力学性能的影响，提出了一种用于MR阻尼器的微观宏观数学模型来描述受MR流体的微观结构影响的MR阻尼器的动力学特性。首先，将MR流体的微观模型引入经典的准静态模型和双S形模型，提出了一个数学模型，该模型通过用传统的双S形模型中的屈服力参数表达了MR流体的微观结构，并具有微结构参数MR流体。通过分析单线圈MR阻尼器性能测试的数据，拟合了所提出数学模型的参数。拟议的麦克风...