Journal
SMART MATERIALS AND STRUCTURES
Volume 24, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0964-1726/24/7/072002
Keywords
magnetic negative stiffness damper; passive negative stiffness mechanism; eddy current damping; vibration control
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This communication presents the design principle and experimental validation of two novel configurations of magnetic negative stiffness dampers (MNSDs), both of which are composed of several permanent magnets arranged in a conductive pipe. The MNSD, as a passive device, efficiently integrates negative stiffness and eddy-current damping in a simple and compact design, in which the negative stiffness behavior depends on the different arrangements of the permanent magnets. When applied to structural vibration control, passive MNSD may achieve a performance comparable with semi-active or active control in some applications. Laboratory experiments of small-scale prototypes successfully verified the proposed MNSD design concept.
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