Ruturaj Gavali
Ansys Employee

Hey Yang Guorui!

Please refer to this example problem. The model here includes piezoelectric material definition. 

Chapter 39: Wire Bonding Ultrasonic Transducer (

Also, refer to the link below to understand how to create new materials and define their properties.

Material Data (


For more information, check out the following links:

Ansys Help

Ansys Learning Forum (Rules & Guidelines)