Transducer 3D - CAD


3D Transducer model (left) and maximum acoustic pressure field (right)

Model Description

Transducer design is one of the many applications that OnScale's core solvers are tailored for. From simple monolithic piezoelectric transducers to complex curved 1-3 piezocomposite array, OnScale can handle it.

As a demonstration, here is a 3D simulation of a simple transducer submerged in water.  Symmetry boundary conditions are used to simplify the CAD geometry and model size to reduce solve time. The transducer is driven with a piezoelectric load applied across the piezoceramic material.


Material Assignments

Parametric Variables

The base CAD model was created in Onshape and allows the following design variables to be adjusted. By default the piezoelectric thickness, piezoelectric radius, and matching layer thickness are added as configuration variables for quick access through the Configuration Panel in Onshape.

Parametric Variable Description Default Value
pzt_thick Thickness of piezoelectric layer 4 mm
pzt_rad Radius of piezoelectric layer 10 mm
match_thick Thickness of matching layer 2 mm
back_thick Thickness of backing layer 14 mm
back_rad Radius of backing layer 12 mm
housing_offset Offset housing distance 10 µm


Here are a list of the types of outputs to expect from this model:

  • Electrical Impedance
  • Mode Shapes (Harmonic Analysis) of base design
  • Maximum Acoustic Pressure


Post Processor Outputs

Runtime Statistics

Model size 7017500 elements
Solve Time 110 s (4 CPU)
Core Hours 0.1219
Memory Usage 850 MB
Recommended CPU Configuration 4 CPU

CAD Project File

The following input files are required to run this model, click here to download the input files:

Download: 3D Transducer CAD Project

The base CAD model is publicly available to view and copy through Onshape:

Model: 3D Transducer Onshape