Vibration absorption of space tethers using pendulum-type elastic metamaterial

    Professor No-Cheol Park in Mechanical Engineering and his research team have designed pendulum-type elastic metamaterials for vibration absorption of space tethers. Space tether is highly exposed to external disturbances such as meteoroid collisions. Disturbances are transmitted to the satellite via tether cables and affect the satellite's orbit and posture. The pendulum-type elastic metamaterial absorbs vibration propagating through the resonance of the internal structure. In addition, his research team proposed a method to absorb vibrations over a wider frequency range using multi-bandgaps.

  The results of the research were published in the International Journal of Mechanical Sciences in July 2020 with the title “Experiment and analysis of a space tether with pendulum-type elastic metamaterials” and Korea patent with the title “Satellite tether device using elastic metamaterial” has been registered.