A finite element modelling approach into the influence of mechanical matching and damping in 1-3 piezocomposites

摘要: This paper presents an investigation into the performance of 1-3 piezocomposite transducers in both air and water media. The modelling strategy involves finite element analysis to predict behaviour when a matching layer or backing block is introduced results compared those obtained using constrained-dimensional linear systems model. model also utilised interpret various resonances present matched damped determine their influence on overall transducer performance. Interesting are demonstrated by strongly-coupled lateral mode close fundamental thickness resonance increase bandwidth reception device, while maintaining reasonable sensitivity