A new method for reducing the natural frequency of single degree of freedom systems

In isolators of single degree of freedom (SDF), the natural frequency must be as low as possible to increase the effectiveness of the anti-vibration. In each isolator, factors influencing the natural frequency such as the length of a pendulum in a simple pendulum, stiffness of a spring in the mass–spring system, etc., are different. In this paper, it is shown that the stored potential energy is a factor which has the biggest influence on the natural frequency. From this factor, a general method to reduce the natural frequency is then introduced.