Abstract
Shock vibration is a common problem involving large forces and accelerations, usually resulting in nonlinear behavior. Normally shock isolation systems are modeled after linear passive stiffness elements intended to absorb the energy from the shock, and viscous damping in order to dissipate the energy. An experimental system with low dynamic stiffness is proposed and presented in this work, using a combination of positive stiffness and negative stiffness given by magnetic forces. The experimental prototype is based on a theoretical model involving a cubic restoring force. The results presented shown how such an isolator provides improved shock isolation, pointing out advantages and disadvantages.
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