Piezoelectric modal damping performance of 0-3 piezoelectric composite with conducting phase: Numerical analysis and experiments

The piezoelectric modal damping performance of 0-3 piezoelectric composite is discussed in this paper. The piezoelectric damping consisting of PZT piezoelectric ceramic, epoxy (EP) and electric carbon black (CB) is analyzed by a numerical prediction method. The finite element analysis (FEA) method is used to predict the effective property of the 0-3 piezoelectric composites. And then the shunted piezoelectric theory is applied to predict the piezoelectric modal damping of 0-3 piezoelectric composites. The results show that the numerical results are accurate to predict the piezoelectric modal damping compared to the experimental results. Doping appropriate amount of CB can improve the damping of 0-3 piezoelectric composite. This work will help to predict the value of piezoelectric modal damping of the 0-3 piezoelectric composite and to optimize the damping design.