INVESTIGATION ON THE NONLINEAR MECHANICAL PERFORMANCE OF NOVEL HYBRID MAGNETORHEOLOGICAL MATERIALS
To improve mechanical performance of magnetorheological elastomers (MRE),two novel hybrid magnetorheological elastomers which were embed with magnetorheological fluids (MRF) and magnetorheological gels (MRG) were fabricated. In this work MRF and MRG were respectively injected into different numbers of holes which were punched on MREs specimens regularly. The nonlinear mechanical properties of magnetorheological fluid-elastomers (MRFE) and magnetorheological gels-elastomers (MRGE) have been evaluated by a modified dynamic mechanical analyzer (DMA) and researched respectively. As experimental results shown, not only the foundation modulus of two novel hybrid magnetorheological materials were higher? than both MRF s and MRG s but also their magnetorheological effects (MR) were better than MREs. The mechanical properties of the two new hybrids were different with traditional MREs. Besides, their dynamic properties changed according to the different volume ratio of MRF and MRG which were injected into MRE specimens. A new model based on theory of composite materials was used to explain the nonlinear mechanical properties of the hybrids,and it fit the experimental data well.
nonlinear mechanical performance, magnetorheological fluid-elastomers, magnetorheological gels-elastomers, magnetorheological effect
W Zhang X L Gong S H Xuan Y G Xu
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027 China
国际会议
广州
英文
221-227
2010-12-17（万方平台首次上网日期，不代表论文的发表时间）