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Design of electromagnetic shock absorbers

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Abstract

Automobiles and trucks have shock absorbers to damp out the vibration experienced due to roughness of the roads. However, energy in conventional shock absorbers gets dissipated as heat and is not used in any way. Regenerative electromagnetic shock absorbers provide a means for recovering the energy dissipated in shock absorbers. Two configurations of regenerative electromagnetic shock absorber have been developed for this purpose: a linear device and a rotary device. Performance of these shocks in a laboratory test stand and in a small all terrain vehicle is described.

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Abbreviations

B i :

Magnetic flux in T

f :

Frequency in Hz

F :

Force in N

H :

Height of pole ring in mm

I :

Current in A

K :

Constant (nhBi) in volt-s/m

L :

Length in mm

n :

Number of turns/mm

P :

Power generated in W

Rc:

Total resistance of coils in Ω

R L :

Resistance of external load in Ω

v :

Velocity in m/s

V :

Voltage in V

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Acknowledgements

Work at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Heavy Vehicle Technologies and Office of Advanced Automotive Technologies, under Contract W-31-109-Eng-38.

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Authors and Affiliations

  1. Mechanical Engineering Department, Northern Illinois University, DeKalb, IL, 60115, USA

    Abhijit Gupta

  2. Energy Technology Division, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL, 60439, USA

    J. A. Jendrzejczyk, T. M. Mulcahy & J. R. Hull

Authors
  1. Abhijit Gupta
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  2. J. A. Jendrzejczyk
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  3. T. M. Mulcahy
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  4. J. R. Hull
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Correspondence to Abhijit Gupta.

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The submitted manuscript has been created by the University of Chicago as Operator of Argonne National Laboratory (“Argonne”) under Contract No. W-31-109-ENG-38 with the U.S. Department of Energy. The U.S. Government retains for itself, and others acting on its behalf, a paid-up, nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government.

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Gupta, A., Jendrzejczyk, J.A., Mulcahy, T.M. et al. Design of electromagnetic shock absorbers. Int J Mech Mater Des 3, 285–291 (2006). https://doi.org/10.1007/s10999-007-9031-5

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  • DOI: https://doi.org/10.1007/s10999-007-9031-5

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