Abstract
To optimize the design of flexure hinges, a new parameter is defined to discuss the stiffness characterization of five general flexure hinges, which are leaf type flexure hinge, corner-filled flexure hinge, elliptical flexure hinge, parabolic flexure hinge and hyperbolic flexure hinge. First, a finite element model of flexure hinges is developed and confirmed by the theoretical formulation data. Because the stiffness is the most important parameters to access the performance of flexure hinges, we find a parameter λ, which is defined as the ratio of the length and width of the notch. Then the stiffness ratio ε of five general flexure hinges is obtained by finite element analysis. Based on this ratio, a micro-displacement amplifier is designed which used for piezoelectric actuator. This method and the stiffness ratio are very helpful to design the micro-displacement amplifier.
| Original language | English |
|---|---|
| Pages (from-to) | 1818-1822 |
| Number of pages | 5 |
| Journal | Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument |
| Volume | 30 |
| Issue number | 9 |
| Publication status | Published - Sept 2009 |
Keywords
- Finite element
- Flexure hinges
- Piezoelectric actuator