Development and Performance Tests of Deployable Display Stands for Art Objects Viable in Severe Earthquakes

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A new type of display stands has been developed for protecting art objects and artifacts from earthquake damage during severe shaking. The concept of deployable (adaptive) structures has been used for the development in which the following three requirements were taken into account : 1) In normal mode when earthquakes are felt, the stand should not obstruct appreciation of art objects. 2) During earthquakes, they should protect the objects without any damage even in severe shaking. 3) Recovery from earthquake to normal modes should be easily operated by a layman.Performance of the stand was demonstrated by vibration experiments and numerical simulations. The stand is equipped with a sensor and a deployable guard frame which is usually folded under the display stand. When the sensor detects shaking stronger than 60 cm/s/s in acceleration, the frame is triggered to be instantly deployed around the object concerned and prevent it from overturning.