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    A monolithic tunable symmetric bistable mechanism

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    A_A monilithic.pdf
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    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Hussein, Hussein cc
    Khan, Fahimullah cc
    Younis, Mohammad I. cc
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Mechanical Engineering Program
    Date
    2020-06-12
    Online Publication Date
    2020-06-12
    Print Publication Date
    2020-07-01
    Submitted Date
    2019-12-19
    Permanent link to this record
    http://hdl.handle.net/10754/662761
    
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    Abstract
    A tunable symmetric bistable micro-machined mechanism with monolithic structure is presented. The mechanism consists of two sets of pre-shaped beams of similar properties and dimensions; however with one set is curved opposite to the other. The bistability is induced by creating a negative stiffness behavior at the initial position of the moving part to break its stability. This is possible at a certain electrothermal axial loading of both beam sets. The active bistability is symmetric with respect to the initial position. The distance between stable positions is tunable with the applied electrothermal voltages. The mechanism can be used as a tunable bi-directional actuator with different applied voltages. The design and concept are demonstrated based on finite-element simulations and experimental measurements.
    Citation
    Hussein, H., Khan, F., & Younis, M. I. (2020). A monolithic tunable symmetric bistable mechanism. Smart Materials and Structures. doi:10.1088/1361-665x/ab8ea3
    Sponsors
    This research is supported by KAUST research fund.
    Publisher
    IOP Publishing
    Journal
    Smart Materials and Structures
    DOI
    10.1088/1361-665x/ab8ea3
    Additional Links
    https://iopscience.iop.org/article/10.1088/1361-665X/ab8ea3
    ae974a485f413a2113503eed53cd6c53
    10.1088/1361-665x/ab8ea3
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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