Finite element simulation of wireless structural vibration control with photostrictive actuators

A recently emerging family of smart materials, photostrictive materials, exhibit large photostriction under uniform illumination of high-energy light. This photostriction mechanism arises from a superposition phenomenon of photovoltaic and converse piezoelectric effects. A photostrictive type of opt...

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Bibliographic Details
Published in:Science China. Technological sciences 2012-03, Vol.55 (3), p.709-716
Main Author: Zheng, ShiJie
Format: Article
Language:English
Subjects:
Actuators
Computer simulation
Engineering
Finite element method
Mathematical analysis
Mathematical models
Photovoltaic cells
Solar cells
Structural vibration
控制效果
无线
智能材料
有限元模拟
激光测振仪
线驱动器
结构振动控制
逆压电效应
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Summary:A recently emerging family of smart materials, photostrictive materials, exhibit large photostriction under uniform illumination of high-energy light. This photostriction mechanism arises from a superposition phenomenon of photovoltaic and converse piezoelectric effects. A photostrictive type of opto-electromechanical actuator activated by high-energy lights can introduce actuation and control effects without hard-wired connections. The control light intensity applied to the actuator is proportional to the transverse velocity at a positioned point, which is measured by a laser vibrometer. In this paper, photostrictive films are numerically analyzed to evaluate their use as wireless actuators for future remote vibration control of flexible structures. A novel opto-electromechanical solid shell finite element formulation is developed for accurate analysis of the multiple physics effects of photovoltaic, pyroelectric and thermal expansion of photostrictive materials. Available experimental data and analytical solutions have been used to verify the present finite element results. The simulation in this study demonstrates that the present formulation is very reliable, accurate and also computationally efficient and that the use of photostrictive actuators can provide good controllability of structural vibration.
ISSN:1674-7321
1869-1900
DOI:10.1007/s11431-011-4568-9