An Ultra-Low Frequency Two DOFs’ Vibration Isolator Using Positive and Negative Stiffness in Parallel

Figure 2

The simulation curves, (a) the relationship between system stiffness ( N/m), payload mass ( kg), and natural frequency ; (b) the relationship between additional stiffness ( N/m) and natural frequency , when initial stiffness ( N/m) and payload mass (kg) are constant.

(a)

(b)