Abstract
In this paper, a two-dimensional isolation table using circular arc beams and a magnetic damper is proposed, which has a simple construction, large loading capacity and the capability of vibration isolation in the horizontal direction. The isolation table is composed of a table board, four spring units using circular arc beams, four struts having a free ball on the top, a copper disk, rare-earth magnets and a baseboard. It has approximately the same stiffness and damping coefficient in every direction in the horizontal plane. A trial isolation table was made and its frequency responses were measured using an electrohydraulic -type shaking table. The experimental results were compared with the calculated results.
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