Transient Stress Response of Magnetorheological (MR) Materials

点击翻译按钮获取中文摘要

9817578Magnetorheological (MR) materials consist of dispersions of micrometersized particulates of magnetically soft materials in organic liquids. Whenan external magnetic field is applied, the polarized magnetic particlesform "pearl chains" constituting a fibrillated structure that exhibits arespectable "yield stress" (~ up to 100 kPa). MR fluids represent atechnology enabling and intellectually engaging family of smart, fieldcontrollable materials. MR fluids can enable many technologies for activevibration control. Applications include shock absorbers, smart bridges, anddampers for high rise buildings for protection against seismic activity.The goal of the proposed program is to carefully investigate theapplication relevant, dynamic mechanical properties of MR materials with aview to elucidate the mechanics and also the mechanisms underlying MRmaterials. We will elucidate the transient stress response of MR fluids inswitching magnetic fields. Our collaborations with industry will be usefulin transferring our research outcomes to the industry.