Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/84180
Type: Conference paper
Title: Planar analysis of a quasi-zero stiffness mechanism using inclined linear springs
Author: Robertson, W.
Cazzolato, B.
Zander, A.
Citation: Proceedings of Acoustics 2013 Victor Harbor: Science Technology and Amenity, Annual Conference of the Australian Acoustical Society, 17-20 November, 2013/ Terrance McMinn (ed.): 6p.
Publisher: The Australian Acoustical Society
Publisher Place: South Australia
Issue Date: 2013
ISBN: 9780646912189
Conference Name: Acoustics 2013 : Science, Technology and Amenity (2013 : Victor Harbor, South Australia)
Statement of
Responsibility: 
William S. P. Robertson, Ben Cazzolato, and Anthony Zander
Abstract: Negative stiffness mechanisms have seen renewed attention in recent years for their ability to reduce the resonance frequency of a structure without impeding their load-bearing ability. Such systems are often described as having quasizero stiffness when the negative stiffness is tuned to reduce the overall stiffness of the system as close to zero as possible without creating an instability. The system analysed in this work consists of a vertical spring for load bearing, and two symmetric inclined springs which behave with a snap-through effect to achieve negative stiffness. While this structure has been analysed extensively in the literature, generally only the stiffness in the vertical direction has been considered in the past. Here, the horizontal stiffness is assessed as well, and it is shown that it is possible to achieve quasi-zero stiffness in both directions simultaneously if the spring stiffnesses and pre-loads are chosen sufficiently. Attention is paid to the tuning required in order to set the equilibrium point at a position which is arbitrarily close to having quasi-zero stiffness while avoiding issues arising from mechanical instability.
Rights: Copyright © 2013, The Australian Acoustical Society
RMID: 0020135526
Description (link): http://www.acoustics.asn.au/conference_proceedings/AAS2013/
http://www.acoustics.asn.au/conference_proceedings/AAS2013/papers/AAS2013-Information.pdf
Published version: http://www.acoustics.asn.au/conference_proceedings/AAS2013/papers/p28.pdf
Appears in Collections:Mechanical Engineering conference papers

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