Related Experiment Video
Updated: Jul 7, 2026
10:39
Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
Published on: August 5, 2020
Simulations of piezoelectric Lamb wave delay lines using a finite element method
W Friedrich1, R Lerch, K Prestele
1Siemens AG, Erlangen.
Summary
This study simulated piezoelectric Lamb-wave delay lines using piezoelectric finite elements. The finite-element method accurately predicted device performance, showing its suitability for optimizing acoustic delay-line devices.
Area of Science:
- Acoustics and Materials Science
- Computational Electromagnetics
Background:
- Piezoelectric Lamb-wave devices are crucial for signal processing and sensing applications.
- Optimizing the design of these devices requires accurate simulation tools.
Purpose of the Study:
- To simulate piezoelectric Lamb-wave delay lines using the finite-element method.
- To analyze the impact of acoustical absorbers on device performance.
- To validate the simulation results against experimental data.
Main Methods:
- Applied the piezoelectric finite element method for simulation.
- Computed free and electrically driven vibrations.
- Solved eigenproblems to determine symmetric Lamb modes.
- Studied transient mechanical build-up for sine wave excitation.
Main Results:
- Calculated transfer functions, group delay times, and impedance matrices for various designs.
- Investigated the influence of acoustical absorbers on device characteristics.
- Achieved good agreement between simulated and experimental results.
Conclusions:
- The finite-element method is a suitable tool for simulating piezoelectric Lamb-wave delay lines.
- This method can be effectively used for optimizing acoustic delay-line device designs.
- Accurate simulation aids in the development of advanced signal processing components.
