Apparatus for Negative Stiffness
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United States of America Patent
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Sep 7, 2016
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Sep 7, 2016
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An apparatus for negative stiffness including one or more solenoids for generating a magnetic field. A moveable magnet is moveable relative to the one or more solenoids through the one or more solenoids. The one or more solenoids are configurable to generate an at least substantially quadratic magnetic field about an equilibrium position at which the resultant force on the moveable magnet is zero. Depending on the respective pole orientation, generating a quadratic magnetic field about an equilibrium position provides a substantially linear negative stiffness characteristic with displacement.
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