Abstract
As a novel composite, magnetorheological fluid porous fabric (MRF-PF) is not modeled and analyzed. In this paper, rheological properties of MRF-PF are quantitatively and qualitatively analyzed based on a novel constitute model. Considering the wall slip and porous network of MRF-PF, a continuum constitute model is proposed firstly which can precisely predict the rheological properties. Based on the comparative experiments, rheological properties of MRF-PF are totally different from convention MR materials. Under low magnetic fields and high shear rates, shear stress τ decreases rapidly with increasing the shear rate. At high magnetic fields, shear stress τ increases dramatically and the shear thinning effect is improved due to the porous networks. Comparing with conventional MR fluid, shear stress, dynamic yield stress and shear thinning effect of MRF-PF are improved significantly. However, MR effect decreases with many times. Experimental results demonstrate that MRF-PF has better rheological performance than conventional MR fluid.
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