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Analytical Study of the Snap-Through and Bistability of Beams With Arbitrarily Initial Shape
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We derive the snap-through solution and the governing snapping force equations for an arbitrarily preshaped beam deflected under a mid-length lateral point force. The exact solution is obtained based on the classical theory ...
Nonlinear Dynamics of Carbon Nanotubes Under Large Electrostatic Force
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Because of the inherent nonlinearities involving the behavior of carbon nanotubes (CNTs) when excited by electrostatic forces, modeling and simulating their behavior are challenging. The complicated form of the electrostatic ...
Statics and Dynamics of MEMS Arches Under Axial Forces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This works aims to investigate the effect of axial forces on the static behavior and the fundamental natural frequency of electrostatically actuated MEMS arches. The analysis is based on a nonlinear equation of motion of ...
Dynamics of Transition Regime in Bistable Vibration Energy Harvesters
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Vibration energy harvesting can be an effective method for scavenging wasted mechanical energy for use by wireless sensors that have limited battery life. Two major goals in designing energy harvesters are enhancing the ...
Investigating Mode Localization at Lower- and Higher-Order Modes in Mechanically Coupled MEMS Resonators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Mode localization is investigated in a weakly mechanically coupled system. The system comprises of two doubly clamped microbeams mechanically linked with a coupling beam close to the anchors. The phenomenon is explored ...
Frequency Shifts of Micro and Nano Cantilever Beam Resonators Due to Added Masses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We present analytical and numerical techniques to accurately calculate the shifts in the natural frequencies of electrically actuated micro and nano (carbon nanotubes (CNTs)) cantilever beams implemented as resonant sensors ...
On the Nonlinear Dynamics of a Doubly Clamped Microbeam Near Primary Resonance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work aims to investigate theoretically and experimentally various nonlinear dynamic behaviors of a doubly clamped microbeam near its primary resonance. Mainly, we investigate the transition behavior from hardening, ...
One-to-One and Three-to-One Internal Resonances in MEMS Shallow Arches
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The nonlinear modal coupling between the vibration modes of an arch-shaped microstructure is an interesting phenomenon, which may have desirable features for numerous applications, such as vibration-based energy harvesters. ...
On the Application of the Multiple Scales Method on Electrostatically Actuated Resonators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We investigate modeling the dynamics of an electrostatically actuated resonator using the perturbation method of multiple time scales (MTS). First, we discuss two approaches to treat the nonlinear parallel-plate electrostatic ...
Theoretical and Experimental Investigation of Two-to-One Internal Resonance in MEMS Arch Resonators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We investigate theoretically and experimentally the two-to-one internal resonance in micromachined arch beams, which are electrothermally tuned and electrostatically driven. By applying an electrothermal voltage across the ...