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

Table 2

Simulation parameters of horizontal direction.

Parameters	Name	Values
	The elastic modulus of flat spring material	Pa
	The bending section moment of inertia	kgm^2
	The effective bending length of the flat spring	0.074 m
	The equivalent mass of inverted pendulum	1000 kg
	The effective length of inverted pendulum	0.032 m
	The positive stiffness of vertical direction	N/m
	The negative stiffness of vertical direction	N/m
	The system stiffness of vertical direction	N/m