Abstract
In this article the force transmissibility of a quasi-zero-stiffness (QZS) isolator is considered. The isolator comprises a vertical spring and two oblique springs that are either linear, linear with pre-stress or softening nonlinear with pre-stress. The force transmissibility of such a system is derived and compared with that of a linear system. Assuming light damping, simple approximate expressions for the maximum transmissibility and jump-down frequencies are derived. It is shown that there are advantages in having nonlinear and pre-stressed oblique springs compared to the other configurations, and that all the QZS systems can outperform the linear system provided that the system parameters are chosen appropriately.
Translated title of the contribution | On the force transmissibility of a vibration isolator with quasi-zero stiffness |
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Original language | English |
Pages (from-to) | 707 - 711 |
Number of pages | 11 |
Journal | Journal of Sound and Vibration |
Volume | 322 (4-5) |
DOIs | |
Publication status | Published - May 2009 |