TY  - EJOU
AU  - Zhao, Chunwei  
AU  - Peng, Xianghe  
AU  - Huang, Jin  
AU  - Hu, Ning  

TI  - An Enhanced Dipole Model Based Micro-Macro Description for Constitutive Behavior of MRFs
T2  - Computers, Materials \& Continua

PY  - 2012
VL  - 30
IS  - 3
SN  - 1546-2226

AB  - The validity of the two conventional micro-macro descriptions for MRFs, based respectively on the exact dipole model and the simplified dipole model, is examined with the results obtained with the commercially available finite element (FE) code ANSYS. It is found that although the simplified dipole model can match better the result by FE computation, there is still a marked difference. An enhanced dipole model is then suggested, which takes into account the contribution of the magnetized particles to magnetic field. Making use of a statistical approach and neglecting the interaction between particle chains, a micro-macro approach is developed for the evaluation of the yield shear stress of MRFs. It can take into account the effects of all the main influencing factors, and can well replicate the main characteristics of the constitutive behavior of MRFs. The method and the results presented are significant for the analysis and optimization of the mechanical properties of MRFs, and for the design of high-performance MRFs.
KW  - Magnetorheological fluids
KW  -  finite element simulation
KW  -  enhanced dipole model
KW  -  micro-macro constitutive description

DO  - 10.3970/cmc.2012.030.219