Aging, rejuvenation, and thixotropy in yielding magnetorheological fluids
作者: Juan VicenteClaudio L. A. Berli
作者单位: 1Department of Applied Physics, Faculty of Sciences, University of Granada
刊名: Rheologica Acta, 2013, Vol.52 (5), pp.467-483
来源数据库: Springer Nature Journal
DOI: 10.1007/s00397-013-0704-8
关键词: MagnetorheologyMagnetorheological fluidsCreepRecoveryUnsteady flowYieldingPhase diagram
原始语种摘要: Abstract(#br)The yielding behavior of dilute magnetorheological (MR) fluids has been investigated using creep–recovery tests. At very low stress levels, MR fluids behave in the linear viscoelastic regime as demonstrated by the fact that the instantaneous strain equals the instantaneous (elastic) recovery. In this region, gap-spanning field-induced structures support the stress levels applied. Upon increasing the stress value, the MR fluid evolves towards a nonlinear viscoelastic response. Here, the retarded elastic and viscous strain decrease, and the plastic contribution to the instantaneous strain grows probably due to the appearance of unattached field-induced structures. A larger stress value results in a viscoplastic solid behavior with negligible retarded and viscous strain and a...
全文获取路径: Springer Nature  (合作)
影响因子:1.626 (2012)

  • rejuvenation 回春酌
  • thixotropy 触变性
  • yielding 收获量