The constitutive model of magnetorheological fluid in the squeeze-shear composite mode
Source abstract
Abstract
The squeeze strengthening effect can significantly enhance the yield stress of magnetorheological(MR) fluids. However, the existing classical dipole model cannot accurately describe the microstructure of MR fluids under the squeeze-shear composite mode, and the constitutive model of yield stress under the composite mode is lacking. In this paper, the classical dipole method, finite element method, and magnetic energy analysis are used to analyze the interaction between particles in the squeeze-shear composite mode, and a fusion dipole model is proposed. A mathematical model of the magnetic energy density of the particle chain under the combined magnetic field and squeeze was established by analyzing the characteristics of the particle chain. By analyzing the micro yield process of MR fluid, the yield stress of MR fluid in composite mode is calculated and verified by experiments. Then, the constitutive model of MR fluid in composite mode is established. The results show that the yield stress accuracy of MR fluid calculated based on the fusion dipole model is more than 94.1%.
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Research context
OpenAlex topics: Vibration Control and Rheological Fluids · Mechanics and Biomechanics Studies · Hydraulic and Pneumatic Systems
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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