A passive vibration isolator incorporating a composite bistable plate
Decreasing the natural frequency of a passive vibration isolator would improve its performance by extending the isolation frequency bandwidth. However, there is trade-off between low natural frequency (low stiffness) and large static displacement. This can be mitigated by employing a nonlinear spring with high-static-low-dynamic-stiffness (HSLDS). In this paper a passive isolator with HSLDS is designed by exploiting the negative stiffness of a composite bistable plate.