LAUSR

The time-dependent performance of magnetorheological elastomers (MREs) under a magnetic field is important for the precise control of smart devices based on MREs. Here, the transient responses of anisotropic magnetorheological elastomers, including magnetic field-induced storage modulus ( Δ G ′) and loss modulus ( Δ G ″), were investigated under different step magnetic fields. The results indicated that Δ G ′ increased over time while Δ G ″ decreased after the initial jump in the loading stage of the step field. Δ G ′ quickly dropped to 0, while Δ G ″ continued to decrease gradually in the removal stage of the step field. A comprehensive model based on magnetic dipolar and viscoelastic parameter models was proposed to explain the transient responses.The time-dependent performance of magnetorheological elastomers (MREs) under a magnetic field is important for the precise control of smart devices based on MREs. Here, the transient responses of anisotropic magnetorheological elastomers, including magnetic field-induced storage modulus ( Δ G ′) and loss modulus ( Δ G ″), were investigated under different step magnetic fields. The results indicated that Δ G ′ increased over time while Δ G ″ decreased after the initial jump in the loading stage of the step field. Δ G ′ quickly dropped to 0, while Δ G ″ continued to decrease gradually in the removal stage of the step field. A comprehensive model based on magnetic dipolar and viscoelastic parameter models was proposed to explain the transient responses.