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设计一种阻尼板点吸收式波浪压电发电装置;建立系统的动力学模型,采用基于格林函数的高阶边界元法对装置浮体的水动力学系数和波浪力进行计算;通过数值仿真方法分析波高、波浪周期、阻尼板尺寸和弹簧刚度对装置性能的影响。研究结果表明,浮漂体与阻尼板之间的相对位移幅值随着波高的增加几乎是线性增加的;相对位移幅值随波浪周期变化的规律与波浪力大小随波周期变化的规律一致,当周期达到4.5 s时相对位移幅值最大,然后趋于稳定;在弹簧刚度k=150 N/m的情况下,当阻尼板尺寸为L=0.35 m时相对位移幅值最大。可为进一步设计样机提供理论参考。
A kind of damping plate point-absorption wave piezoelectric generator was designed. The dynamic model of the system was established. The high-order boundary element method based on Green’s function was used to calculate the hydrodynamic coefficient and wave force of the floating body. By numerical simulation Wave height, wave period, damping plate size and spring stiffness of the device performance. The results show that the amplitude of relative displacement between the float and the damping plate increases almost linearly with the increase of the wave height. The law of the amplitude of the relative displacement with the period of the wave and the variation of the wave force with the wave period are the same When the period reaches 4.5 s, the relative displacement amplitude is the largest and then tends to be stable. With the spring constant k = 150 N / m, the relative displacement amplitude is the largest when the damping plate size is L = 0.35 m. It can provide theoretical reference for further design of prototype.