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Supersonic aerodynamic piezoelectric energy harvesting performance of functionally graded beams

机译：功能渐变梁的超音速空气动力学压电能量采集性能

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摘要

In this study, a novel multifunctional nonlinear composite structure consisting of functionally graded beams and piezoelectric sheets is proposed. This structure exhibits excellent supersonic aerodynamic energy harvesting performance under heating conditions. Referring to the geometric large deformation theory, the electromechanical coupling dynamics equation of the whole structure under supersonic aerodynamic force and the thermal environment is established by Hamilton's principle. The energy harvesting effect of piezoelectric sheets is simulated by Runge-Kutta algorithm. The correlation parameters of the length-to-fine ratio, gradient index, resistance, airflow speed, and temperature were compared and analyzed. Results show that this new multifunctional nonlinear composite structure can achieve the ideal energy harvesting effect and proper adjustment of parameters can improve the energy harvesting effect under the thermal environment. This study provides new ideas for related research on nonlinear energy harvesting under heating conditions.
机译：在该研究中，提出了一种由功能梯度梁和压电片组成的新型多功能非线性复合结构。该结构在加热条件下表现出优异的超音速空气动力能量收集性能。参考几何大变形理论，由汉密尔顿原则建立了超音速空气动力和热环境下整个结构的机电耦合动力学方程。压电片的能量收集效果由径g-Kutta算法模拟。比较和分析长度到细比的相关参数，梯度指数，电阻，气流和温度。结果表明，这种新的多功能非线性复合结构可以实现理想的能量收集效果，适当调整参数可以提高热环境下的能量收集效果。本研究为在加热条件下有关非线性能量收割的相关研究提供了新的思路。

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