Composite Piezoelectric Transducer
Application ID: 503
This example shows how to set up a piezoelectric transducer problem following the work of Y. Kagawa and T. Yamabuchi.
The composite piezoelectric ultrasonic transducer has a cylindrical geometry that consists of a piezoceramic layer, two aluminum layers, and two adhesive layers. The system applies an AC potential on the electrode surfaces of both sides of the piezoceramic layer.
The goal is to compute the admittance for a frequency range around the four lowest eigenfrequencies of the structure.
This is a benchmark model for ultrasonic transducer simulation but also a good starting point for simulations of SAW and BAW filters.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® and
- either the Acoustics Module, MEMS Module, or Structural Mechanics Module and
- either the AC/DC Module, MEMS Module, Plasma Module, or Semiconductor Module
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.