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Title: Vibration suppression in high-speed trains with negative stiffness dampers
Authors: Shi, X 
Zhu, SY 
Niu, YQ 
Li, JC
Keywords: Negative stiffness
Vibration control
High-speed train
Active control
Issue Date: 2018
Publisher: Techno Press
Source: Smart structures and systems, May 2018, v. 21, no. 5, p. 653-668 How to cite?
Journal: Smart structures and systems 
Abstract: This work proposes and investigates re-centering negative stiffness dampers (NSDs) for vibration suppression in high-speed trains. The merit of the negative stiffness feature is demonstrated by active controllers on a high-speed train. This merit inspires the replacement of active controllers with re-centering NSDs, which are more reliable and robust than active controllers. The proposed damper design consists of a passive magnetic negative stiffness spring and a semi-active positioning shaft for re-centering function. The former produces negative stiffness control forces, and the latter prevents the amplification of quasi-static spring deflection. Numerical investigations verify that the proposed re-centering NSD can improve ride comfort significantly without amplifying spring deflection.
ISSN: 1738-1584
EISSN: 1738-1991
DOI: 10.12989/sss.2018.21.5.653
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