Adjustable static and dynamic actuation of clamped-guided beams using electrothermal axial loads
Name:
1-s2.0-S0924424717317764-main.pdf
Size:
690.2Kb
Format:
PDF
Description:
Accepted Manuscript
Type
ArticleKAUST Grant Number
OSR-2016-CRG5-3001Date
2018-02-14Online Publication Date
2018-02-14Print Publication Date
2018-04Permanent link to this record
http://hdl.handle.net/10754/627162
Metadata
Show full item recordAbstract
The paper presents adjustable static and dynamic actuations of in-plane clamped-guided beams. The structures, of variable stiffness, can be used as highly tunable resonators and actuators. Axial loads are applied through electrothermal U-shaped and flexure beams actuators stacked near the edges of curved (arch) beams. The electrothermal actuators can be configurred in various ways to adjust as desired the mechanical stiffness of the structures; thereby controlling their deformation stroke as actuators and their operating resonance frequency as resonators. The experimental and finite element results demonstrate the flexibility of the designs in terms of static displacements and resonance frequencies of the first and second symmetric modes of the arches. The results show considerable increase in the resonance frequency and deflection of the microbeam upon changing end actuation conditions, which can be promising for low voltage actuation and tunable resonators applications, such as filters and memory devices. As case studies of potential device configurations of the proposed design, we demonstrate eight possibilities of achieving new static and dynamic behaviors, which produce various resonance frequencies and static displacement curves. The ability to actively shift the entire frequency response curve of a device is desirable for several applications to compensate for in-use anchor degradations and deformations. As an example, we experimentally demonstrate using the device as a resonant logic gate, with active resonance tuning, showing fundamental 2-bit logic functions, such as AND,XOR, and NOR.Citation
Alcheikh N, Tella SA, Younis MI (2018) Adjustable static and dynamic actuation of clamped-guided beams using electrothermal axial loads. Sensors and Actuators A: Physical 273: 19–29. Available: http://dx.doi.org/10.1016/j.sna.2018.01.066.Sponsors
This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) office of sponsored research OSR under Award No. OSR-2016-CRG5-3001.Publisher
Elsevier BVAdditional Links
http://www.sciencedirect.com/science/article/pii/S0924424717317764ae974a485f413a2113503eed53cd6c53
10.1016/j.sna.2018.01.066