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- Asperity contact model (1)
- Bounce mitigation (1)
- Casimir force (1)
- Contact bouncing (1)
- Dielectric elastomer transducers (1)
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- Electrical breakdown. (1)
- Electrostatic (1)
- Energy harvesting (1)
- Frequency tuning (1)
- Harmonic dither (1)
- Harmonic perturbations (1)
- MEMS (1)
- NEMS (1)
- Nonlinear viscosity (1)
- Piezoelectric (1)
- Secondary actuator (1)
- Surface effects (1)
- Switch (1)
- Transient response (1)
- Uncertainty quantification (1)
- Van der Waals force (1)
- Viscoelasticity (1)
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Effect Of The Nonlinear Material Viscosity On The Performance Of Dielectric Elastomer Transducers, Yuanping Li
Effect Of The Nonlinear Material Viscosity On The Performance Of Dielectric Elastomer Transducers, Yuanping Li
Electronic Thesis and Dissertation Repository
As a typical type of soft electroactive materials, dielectric elastomers (DEs) are capable of producing large voltage-induced deformation, which makes them desirable materials for a variety of applications in transduction technology, including tunable oscillators, resonators, biomimetics and energy harvesters. The dynamic and energy harvesting performance of such DE-based devices is strongly affected not only by multiple failure modes such as electrical breakdown, electromechanical instability, loss-of-tension and fatigue, but also by their material viscoelasticity. Moreover, as suggested by experiments and theoretical studies, DEs possess nonlinear relaxation processes, which makes modeling of the performance of DE-based devices more challenging.
In this thesis, …
Bouncing Dynamics Of A Class Of Mem/Nem Switching Systems, Mohamed Bognash
Bouncing Dynamics Of A Class Of Mem/Nem Switching Systems, Mohamed Bognash
Electronic Thesis and Dissertation Repository
The aim of the present research is to understand the bouncing dynamic behavior of NEM/MEM switches in order to improve the switch performance and reliability. It is well known that the bouncing can dramatically degrade the switch performance and life; hence, in the present study, bouncing dynamics of a cantilever-based NME/MEM switch has been studied in detail. To this end, a model of a MEM switch that incorporates electrostatic force, squeeze film air damping force as well as asperity-based contact force has been proposed for an electrostatically actuated switch. An actuation force due to piezoelectric effects is further included in …