含损伤任意弹性支撑梁结构EMI响应分析

EMI response model of elastically supported piezoelectric intelligent damaged beam structures

针对已有压电智能梁结构EMI响应模型不能适用于任意弹性边界情况的缺陷,考虑了压电片的惯性力因素,将边界模拟为线性弹簧和扭转弹簧的组合,建立并求解压电智能梁结构动力学方程,得到任意边界弹性边界含损伤压电智能梁结构EMI响应模型,将所建模型计算结果与实验测量进行比较,验证了所建模型可以较精确地预测EMI响应信号。

To overcome the disadvantage of the current EMI response model of piezoelectric intelligent beam structures not applicable for them with arbitrary elastic boundary, the inertial effect of piezoelectric patches was considered here, the boundary of beams was simulated as a combination of linear line-springs and torsional springs the dynamic equation of the beams was built. The EMI response model of piezoelectric intelligent damaged beam structure with arbitary elastic boundary was derived by solving the dynamic equations. The computing results with the built EMI response model were compared with those of the corresponding tests. It was shown that the established EMI response model can predict the EMI response signals of the beams more accurately.