Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (8): 1149-1153.DOI: 10.12068/j.issn.1005-3026.2018.08.017

• Mechanical Engineering • Previous Articles     Next Articles

Numerical Modeling and Test of Braking Time on Magneto-rheological Brake

SONG Wan-li1,2, TAO Yan1, HU Zhi-chao2, WANG Na1   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China.
  • Received:2017-04-11 Revised:2017-04-11 Online:2018-08-15 Published:2018-09-12
  • Contact: HU Zhi-chao
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Abstract: To study the relationship between the braking time and the working gap of the magneto-rheological brake (MRB), the calculating formula of braking time on the MRB was deduced based on the Bingham theory model and the ANSYS magnetic field simulation. The braking time corresponding to different rotating angular velocities under different working gaps was calculated based on the formula and the measuring test of braking time and rotational angular velocity under different working gaps was carried out based on MRB with adjustable working gap. Comparing the theoretical value with the experimental one, the braking time is shown to increase linearly with the working gap, and the correctness of the theoretical calculation formulas was verified. The braking time under different currents was measured, and the nonlinear relationship between the braking time and current under the same working gap was proved.

Key words: magneto-rheological brake, braking torque, working gap, rotating angular velocity, braking time

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