Development of 20G acceleration shaking table system enabled by resonant vibration and cancellation of vibration problem at operation

Abstract

In order to conduct vibration test of nuclear components, high acceleration shaking table system using resonance vibration has been developed. Maximum acceleration of 200 m/s2 with 5 ton specimen weight is achieved. At the trial operation of resonance shaking table, the environmental influence exceeding the regulation value of vibration level has been occurred at the site boundary. In order to suppress vibration of resonance shaking table, the semi-active mass damper (SAMD) has been additionally installed on base of shaking table. Vibration of resonance shaking table was reduced by counterforce of the SAMD. For the confirmation of the earthquake-proof safety for various nuclear facilities, resonance shaking table will be utilized.