TY - GEN
T1 - Underwater energy harvesting from base excitation of ionic polymer metal composites undergoing torsional vibrations
AU - Cha, Youngsu
AU - Shen, Linfeng
AU - Porfiri, Maurizio
PY - 2013
Y1 - 2013
N2 - In this study, we investigate underwater energy harvesting from torsional vibration of a patterned ionic polymer metal composite (IPMC). The IPMC design consists of a rectangular polymer strip with patterned electrodes to split the top and bottom surfaces in two equal pairs. We focus on harmonic base excitation of an IPMC, which is modeled as a slender beam with thin cross section vibrating in a viscous fluid. Torsional vibrations with large-amplitude are described using a complex hydro-dynamic function considering nonlinear hydrodynamic damping from the surrounding fluid. Along with the theoretical beam model, an electromechanical model is utilized to predict the IPMC electrical response from the torsional deformation of the beam. The integration of both models allows to predict the output voltage of the IPMC from the knowledge of the frequency and amplitude of base excitation. The theoretical predictions are validated against experiments.
AB - In this study, we investigate underwater energy harvesting from torsional vibration of a patterned ionic polymer metal composite (IPMC). The IPMC design consists of a rectangular polymer strip with patterned electrodes to split the top and bottom surfaces in two equal pairs. We focus on harmonic base excitation of an IPMC, which is modeled as a slender beam with thin cross section vibrating in a viscous fluid. Torsional vibrations with large-amplitude are described using a complex hydro-dynamic function considering nonlinear hydrodynamic damping from the surrounding fluid. Along with the theoretical beam model, an electromechanical model is utilized to predict the IPMC electrical response from the torsional deformation of the beam. The integration of both models allows to predict the output voltage of the IPMC from the knowledge of the frequency and amplitude of base excitation. The theoretical predictions are validated against experiments.
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U2 - 10.1115/SMASIS2013-3125
DO - 10.1115/SMASIS2013-3125
M3 - Conference contribution
AN - SCOPUS:84896372514
SN - 9780791856048
T3 - ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013
BT - Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting
PB - American Society of Mechanical Engineers
T2 - ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013
Y2 - 16 September 2013 through 18 September 2013
ER -