Abstract
This investigation analyzed the influence of design variables (L, y, t, and x) of a new flexible hinge displacement amplification mechanism on (i) magnification ratio, (ii) maximum principal stress, and (iii) the first modal shape frequency. Besides, we proposed a grey relational analysis applied to the three parameters of the mechanism. To achieve the high working performance of the compliant mechanism, the motion scope works long term with high frequency and subjects to force tension with the torque. The finite element analysis (FEA) outcomes indicate that design variables have significantly affected the magnification ratio of the mechanism. The optimal outcomes of displacement, maximum principal stress, and the first modal shape frequency obtain at 0.6727 mm, 32.123 MPa, and 85.383 Hz, respectively while the predicted outcomes of displacement, maximum principal stress, and the first modal shape frequency achieve 0.7095 mm, 31.2077 MPa, and 82.6448 Hz. These results are in good agreement with the error of displacement, stress, and frequency with 5.19%, 1.92%, and 3.11%, respectively. The magnification ratio of the proposed mechanism obtained 67.27 times.
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Huynh, NT., Nguyen, T.V.T., Tam, N.T., Nguyen, QM. (2021). Optimizing Magnification Ratio for the Flexible Hinge Displacement Amplifier Mechanism Design. In: Long, B.T., Kim, YH., Ishizaki, K., Toan, N.D., Parinov, I.A., Vu, N.P. (eds) Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020). MMMS 2020. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-69610-8_102
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