Comparisons are made with those of an equivalent linear isolator and the typical 1 degree-of-freedom (DOF) QZS isolator. Approximation force and displacement transmissibility of the system are calculated to evaluate the isolation performance. Effects of different parameters on the isolation performance are studied and summarized. Numerical simulation is given and the harmonic balance method (HBM) is used to obtain time responses for analysis. The model is first established, the equilibrium point is derived and the optimal stiffness ratio of this novel system at the equilibrium position is also obtained. This article introduces a pendulum element to a 3-spring vibration isolator to achieve a high-static-low-dynamic (HSLD) stiffness or even quasi-zero stiffness (QZS) around the equilibrium position. Journal of Verification, Validation and Uncertainty Quantification.Journal of Thermal Science and Engineering Applications.Journal of Offshore Mechanics and Arctic Engineering.Journal of Nuclear Engineering and Radiation Science.Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems. ![]()
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