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Techniques for optimizing parameters of negative stiffness
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2007Passive isolation systems based on springs are often used to resist vibration due to their low cost and reliability. The basic principle of these systems is that they try to decrease the natural frequency as low as possible. Stiffness of the overall spring system must be low to make the isolator achieve the low natural frequency. An approach to obtain
S-T Park, T-T Luu
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Optimal Placement of Negative Stiffness Damping System
Volume 1: Development and Characterization of Multifunctional Materials; Mechanics and Behavior of Active Materials; Modeling, Simulation and Control of Adaptive Systems, 2015Negative stiffness systems have been widely studied for their seismic response reduction characteristics and have been found to be very effective in reducing seismic responses in structures. Based primarily on the concept of introducing flexibility in the structure, they bring about seismic response reduction by reversing the force–deformation ...
Gisha Mary Mathew +2 more
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Negative stiffness mechanical metamaterials: a review
Smart Materials and StructuresAbstract Metamaterials have thrived in recent years, with negative stiffness mechanical metamaterials (NSMMS) emerging as an essential branch. Extensive research in the past decade has yielded fruitful results in this field. This work encompasses an in-depth exploration of the origin of negative stiffness behavior, along with detailed ...
Xiaojun Tan +6 more
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General forms of controller realizing negative stiffness
SICE Annual Conference 2007, 2007The zero-power magnetic suspension system behaves as if it has negative stiffness. Suspension with a similar characteristic can be realized by using a linear actuator such as a voice coil motor. The controllers realizing negative stiffness with a linear actuator are compared with zero-power controllers analytically.
null Takeshi Mizuno +3 more
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Negative stiffness honeycombs as tunable elastic metamaterials
Journal of Applied Physics, 2018Acoustic and elastic metamaterials are media with a subwavelength structure that behave as effective materials displaying atypical effective dynamic properties. These material systems are of interest because the design of their sub-wavelength structure allows for direct control of macroscopic wave dispersion.
Benjamin M. Goldsberry +1 more
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Impact behavior of negative stiffness honeycomb materials
Journal of Materials Research, 2018Abstract
David A. Debeau +2 more
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A quasi-zero stiffness energy harvesting isolator with triple negative stiffness
Acta Mechanica SinicazbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cai, Xiangyu +3 more
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Plate spring mechanism with constant negative stiffness
Mechanism and Machine Theory, 1979Abstract For mechanisms to guide small rotations and translations in instruments the use of elastic elements, such as torsion wires, membranes and plate springs, is widely accepted. In general the loads, necessary to move the body guided by an elastic element to a desired position, contain components which cause undesired motions. To minimize motions
J. van Eijk, J.F. Dijksman
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Pneumatic Zero-Compliance Mechanism Using Negative Stiffness
2006This paper investigates the applicability of pneumatic actuator to zerocompliance mechanism for vibration isolation. A control method of realizing prescribed negative stiffness by a pneumatic actuator is shown. Its efficacy is verified in a fabricated single-axis apparatus. It was also demonstrated that the equalization of the amplitude of negative and
Takeshi Mizuno +2 more
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