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Modeling and Optimal Design of Bridge-Type Displacement Amplifier

Lavanya, SB and Jayanth, GR (2022) Modeling and Optimal Design of Bridge-Type Displacement Amplifier. In: 5th International and 20th National Conference on Machines and Mechanisms, iNaCoMM 2021, 9 December 2021- 11 December 2021, Jabalpur, pp. 117-125.

Full text not available from this repository.
Official URL: https://doi.org/10.1007/978-981-19-3716-3_9


Bridge-type displacement amplifiers are compliant mechanisms that are widely used in high-precision positioning, where they are typically employed to amplify the input displacement of a piezo-actuator. This paper presents a quasi-static model for the amplifier considering the effect of elastic deformation of the beam and the flexure hinges. Closed-form expressions for the amplification ratio of the amplifier, the angular deformation of the beam, and the necessary force are derived in terms of geometric parameters of the amplifier. The dependence of the amplification ratio on the geometric parameters of the connecting-beam and its tilt angle is studied, and the optimal values of the same are obtained. Additionally, two characteristic length-scales are identified, and guidelines are proposed for choosing the beam-length for a desired amplification in terms of these length-scales. In all cases, the analytical results are validated by comparing them with those of finite element analysis.

Item Type: Conference Paper
Publication: Lecture Notes in Mechanical Engineering
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH
Keywords: Bridges; Hinges; Mechanisms, Amplification ratio; Bridge-type; Bridge-type displacement amplifier; Complaint mechanisms; Displacement amplifier; Flexure hinge; Length scale; Mechanical amplifier; Modeling designs; Optimal design, Optimal systems
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 01 Dec 2022 05:36
Last Modified: 01 Dec 2022 05:36
URI: https://eprints.iisc.ac.in/id/eprint/77880

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