Optimization the first frequency modal shape of a tensural displacement amplifier employing flexure hinge by using Taguchi Method

Abstract

The high amplification ratio, high frequency, and larger workspace always ask in compliant mechanisms. Thus, in this investigation optimized design dimension to select an optimal model for a tensural displacement amplifier employing flexure hinge by utilizing Taguchi method based on finite element analysis (FEA). The Solidworks software was applied to design the model, the first modal shape frequency was gained by FEA in ANSYS. The orthogonal L27 was applied to design 27 experiments. The data was collected from 27 cases which were analyzed by signal to noise, ANOVA and regression analysis (RA). The simulation results indicated that thickness of flexure hinge (TOFH) made significant increasing the 1st natural frequency when its rises from 0.3 mm to 0.7 mm and decreased as incline angle between two flexure hinges rises from 00 to 0.50. The phenomena also confirmed by S/N analysis, ANOVA and RA. The optimal value of the frequency obtained 214.06 Hz is good agreement with the forecasted value of 198.1758 Hz with deviation error of 7.15%.