Resonant behaviors of a nonlinear cantilever beam with tip mass subject to an axial force and electrostatic excitation

Nonlinear dynamic and energetic characteristics of piezoelectric energy harvester with two rotatable external magnets

“…On the other hand, the development of frequency tuning techniques was another approach to resolve the poor performance issue of a linear resonator-type energy harvester, the efficiency of which drastically decreases when the ambient vibration frequency deviates from the resonance frequency of the harvester [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][28][29][30]. Leland and Wright [12] showed that the resonance frequency of a simply supported piezoelectric bimorph beam can be changed by increasing the compressive axial preload.…”

“…To overcome the forgoing issues with vibration energy harvesters, broadband energy harvesters using nonlinear characteristics such as the stiffness softening or hardening effect have been suggested and investigated using both experimental and theoretical approaches [14][15][16][17][18][19][20][21][22][23][24][25][26][28][29][30][31][32]. Abdelkefi and Barsallo [16] investigated the cantilever-beam-type energy harvester for its use in a low-frequency excitation environment.…”

Non-Linear Piezoelectric Actuator with a Preloaded Cantilever Beam

“…When the standard used for the selection of the transducer is the output amplitude, these nonlinear transducers are better generators. For example, magnetoelastic structures [23][24][25] and vertical cantilever beams with tip masses [26][27][28] were specifically designed to exhibit a nonlinear response and are used to facilitate piezoelectric energy harvesting. Many of these systems demonstrate the advantages of Duffing oscillators and obtain increased bandwidth [20,21,29].…”

Vibration behavior of a viscoelastic composite microbeam under simultaneous electrostatic and piezoelectric actuation

“…Other researchers considered other aspects of this basic structure such as nonlinear resonant behavior (Kim et al 2012) and nonlinear dynamics (Kacem et al 2011) of the microbeam resonator.…”