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vibrations

  • vibrational alarm is used to detect small vibrations

    vibrational alarm is used to detect small vibrations

    標簽: vibrational vibrations detect alarm

    上傳時間: 2017-04-06

    上傳用戶:xiaohuanhuan

  • 1 Seismic response control using electromagnetic

    This paper presents a new type of electromagnetic damper with rotating inertial mass that has been devel oped to control the vibrations of structures subjected to earthquakes. The electromagnetic inertial mass damper (EIMD) consists of a ball screw that converts axial oscillation of the rod end into rotational motion of the internal flflywheel and an electric generator that is turned by the rotation of the inner rod. The EIMD is able to generate a large inertial force created by the rotating flflywheel and a variable damping force devel oped by the electric generator. Device performance tests of reduced-scale and full-scale EIMDs were under taken to verify the basic characteristics of the damper and the validity of the derived theoretical formulae. Shaking table tests of a three-story structure with EIMDs and earthquake response analyses of a building with EIMDs were conducted to demonstrate the seismic response control performance of the EIMD. The EIMD is able to reduce story drifts as well as accelerations and surpasses conventional types of dampers in reducing acceleration responses.

    標簽: electromagnetic response Seismic control using

    上傳時間: 2021-11-04

    上傳用戶:a1293065

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