Abstract

In this study, energy harvesting from nonlinear vibrations of a functionally graded plate with bonded piezoelectric patch under moving loads and moving masses is investigated. The coupled nonlinear system of equations are derived using the generalized Hamilton’s principle considering both the geometrical nonlinearity and the nonlinear electromechanical coupling. Then, the equations are solved using finite element method and Newmark time integration scheme. For a case study, the effects of different parameters such as piezoelectric patch thickness, location of piezoelectric patch, different boundary conditions, and different width of plate on harvested power and the plate’s nonlinear vibration are investigated. This article is motivated by the lack of published studies on nonlinear distributed piezoelectric energy harvesters under moving loads (masses).

摘要

在这项研究中，研究了在移动负载和移动质量下，从具有粘合压电贴片的功能梯度板的非线性振动中收集能量。考虑到几何非线性和非线性机电耦合，使用广义哈密顿原理推导出耦合非线性方程组。然后，利用有限元法和纽马克时间积分方案求解方程。在案例研究中，研究了不同参数（例如压电贴片厚度、压电贴片位置、不同边界条件和不同板宽度）对收集功率和板非线性振动的影响。