A5-a1 - Acoustic Wave Propagation in Porous Piezoelectric Media
- Event
- 2025 ICU PADERBORN - 9th International Congress on Ultrasonics
2025-09-21 - 2025-09-25
Paderborn - Band
- Lectures
- Chapter
- A5-a - Computational Acoustics for Complex Media and Structures
- Author(s)
- Z. Sun, Y. Zhou, X. Wang, L. Liu, X. He, Y. Lu - Chinese Academy of Sciences, Beijing (China)
- Pages
- 48 - 52
- DOI
- 10.5162/Ultrasonic2025/A5-a1
- ISBN
- 978-3-910600-08-9
- Price
- free
Abstract
Porous piezoelectric media are heterogeneous complex materials composed of a piezoelectric solid skeleton with fluid-filled pores, holding significant value in transducer optimization and understanding bone regeneration mechanisms. However, existing studies are predominantly theoretical, lacking rigorous full-wavefield numerical simulations, particularly accurate treatment of the coupled poroelastic and piezoelectric effects. To address this issue, this work develops a high-fidelity staggered-grid finite-difference time-domain (FDTD) framework for simulating acoustic wave propagation in anisotropic porous piezoelectric media. A mechanical-electrical coupled staggered grid rigorously handles electromechanical coupling by solving Poisson’s equation at each time step. Numerical results are validated against analytical solutions from the Christoffel equation, demonstrating superior accuracy compared to simplified coupling schemes.