In this paper, the maximum obtainable energy from a galloping cantilever beam is found. The system consists of a bluff body in front of wind which was mounted on a cantilever beam and supported by piezoelectric sheets. Wind energy caused the transverse vibration of the beam and the mechanical energy of vibration is transferred to electrical charge by use of piezoelectric transducer. The nonlinear motion of the Euler–Bernoulli beam and conservation of electrical energy is modeled by lumped ordinary differential equations. The wind forces on the bluff body are modeled by quasisteady aeroelasticity approximation where the fluid and solid corresponding dynamics are disconnected in time scales. The linearized motion of beam is limited by its yield stress which causes to find a limit on energy harvesting of the system. The theory founded is used to check the validity of previous results of researchers for the effect of wind speed, tip cross-section geometry, and electrical load resistance on onset speed to galloping, tip displacement, and harvested power. Finally, maximum obtainable average power in a standard RC circuit as a function of deflection limit and synchronized charge extraction is obtained.

中文翻译：

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疾驰的压电器件可获取的最大能量收集功率

在本文中，从疾驰的悬臂梁中获得了最大可获得的能量。该系统由风前的钝体组成，该钝体安装在悬臂梁上并由压电板支撑。风能引起梁的横向振动，并且振动的机械能通过使用压电换能器转换为电荷。欧拉-伯努利梁的非线性运动和电能守恒通过集中的常微分方程建模。虚张声势体上的风力是通过准稳态气动弹性近似建模的，其中流体和固体的相应动力学在时间尺度上是不连续的。梁的线性运动受到其屈服应力的限制，屈服应力导致找到系统能量收集的极限。建立的理论用于检验研究人员先前结果对风速，叶尖横截面几何形状和电气负载电阻对驰to速度，叶尖位移和收割功率的影响的有效性。最终，获得了标准RC电路中最大可获得的平均功率，它是偏转极限和同步电荷提取的函数。