Show simple item record

contributor authorCosner, Joel
contributor authorTai, Wei-Che
date accessioned2025-04-21T10:35:12Z
date available2025-04-21T10:35:12Z
date copyright11/22/2024 12:00:00 AM
date issued2024
identifier issn1048-9002
identifier othervib_146_6_061102.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4306496
description abstractThis research focuses on the prediction and experimental verification of P-bifurcation as well as the effectiveness in reducing vibrations and harvesting energy with the use of an inertially nonlinear energy harvesting device attached to a single-degree-of-freedom structure subjected to Gaussian broadband base excitation, modeled as white noise. Four experimental scenarios were tested, including three with different resistive loads and one with an open circuit. Frequency domain optimization involved an optimization routine that was designed to minimize the mean squared error in the pendulum velocity’s frequency content below two cycles per second while constraining the root mean square velocity discrepancy between the simulations and actual experiments to be below 3%. This facilitated accurate predictions of power, vibration suppression, and P-bifurcation. Using the fitted model, an analytically derived P-bifurcation boundary in the noise intensity versus electrical damping plane was presented and experimentally verified. Additionally, power spectral densities for electric power and relative suspended mass velocity were determined for the inerter pendulum vibration absorber system and compared with a top-performing linear system. Results indicated that the monomodal system was the least effective in energy harvesting, while the bimodal and rotational systems significantly enhanced mean and resonant peak power by up to a factor of four and two, respectively. Near the resonant frequency, the peak relative velocity power spectral density decreased by around a factor of four, and the mean square relative velocity improved by as much as a factor of two.
publisherThe American Society of Mechanical Engineers (ASME)
titleUtilization of Stochastic P-Bifurcation for Simultaneous Energy Harvesting and Vibration Suppression: An Experimental Investigation
typeJournal Paper
journal volume146
journal issue6
journal titleJournal of Vibration and Acoustics
identifier doi10.1115/1.4067080
journal fristpage61102-1
journal lastpage61102-11
page11
treeJournal of Vibration and Acoustics:;2024:;volume( 146 ):;issue: 006
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record