Development of the Passive Damper System Realizing the Negative Stiffness Control
Publication: Lifelines 2022
ABSTRACT
The negative stiffness control is one of the structural control methods where the control force is negatively proportional to deformation. It has been clarified by past works that negative stiffness control makes it possible to decrease the existing stiffness of the structure to be installed, thereby suppressing the absolute acceleration and absolute displacement responses that are related to the damage of structure. When it comes to build an actual damper device, however, it can only be achieved by using sophisticated but complicated active controlled actuators or semi-active devices. This paper proposed a new vibration control device realizing negative stiffness in a passive manner was proposed. The prototype of the proposed device was assembled, and its performance was investigated through sinusoidal loading tests. It was found from the periodical loading tests that the proposed device generated the designated negative stiffness as well as friction energy dissipations in a good accuracy. It consequently follows that the proposed mechanism could successfully realize a negative stiffness control in a passive manner.
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REFERENCES
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Lifelines 2022
Pages: 178 - 186
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Published online: Nov 16, 2022
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