Magneto-induced normal stress of magnetorheological plastomer

An abrupt drop phenomenon of magneto-induced normal stress of magnetorheological plastomer is reported and a microstructure dependent slipping hypothesis is proposed to interpret this interesting behavior. For polyurethane based magnetorheological plastomer sample with 70 wt.% carbonyl iron powder,...

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Bibliographic Details
Published inAIP advances Vol. 3; no. 8; p. 082122
Main Authors Liu, Taixiang, Xu, Yangguang, Gong, Xinglong, Pang, Haoming, Xuan, Shouhu
Format Journal Article
LanguageEnglish
Published AIP Publishing LLC 01.08.2013
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Summary:An abrupt drop phenomenon of magneto-induced normal stress of magnetorheological plastomer is reported and a microstructure dependent slipping hypothesis is proposed to interpret this interesting behavior. For polyurethane based magnetorheological plastomer sample with 70 wt.% carbonyl iron powder, the magneto-induced normal stress can reach to as high as 60.2 kPa when a 930 mT magnetic field is suddenly applied. Meanwhile, the normal stress shows unpredicted abrupt drop. Particle dynamics is used to investigate the physical generating mechanism of normal stress. The simulation result agrees well with the experimental result, indicating that the interior microstructure of iron particle aggregation plays a crucial role to the normal stress.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4819462