一种多孔压电介质声波传播方法、装置和计算设备
By using electromechanically coupled staggered mesh design and finite difference calculation, the accuracy problem of full-wave field simulation of porous piezoelectric media was solved, and a comprehensive understanding of the complex coupling effect between piezoelectric solids and porous fluids was achieved. This improved the accuracy and reliability of acoustic wave propagation and was applied to the analysis of piezoelectric ceramic transducers and piezoelectric bone tissue.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INST OF ACOUSTICS CHINESE ACAD OF SCI
- Filing Date
- 2025-11-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies lack direct numerical simulation and rigorous verification of the full wave field of porous piezoelectric media, making it difficult to fully reveal the influence of the complex coupling effect between piezoelectric solids and porous fluids on acoustic propagation characteristics. Furthermore, the electromechanical coupling treatment under the quasi-static approximation introduces artificial stiffening effects, leading to velocity deviation and wave field distortion.
An electromechanical coupled staggered mesh design is adopted. By configuring an acoustic mesh model and defining the spatial distribution of physical field variables, and combining Biot's porous elasticity theory with piezoelectric constitutive relations, finite difference calculations are performed to ensure the calculation of high-order difference templates for stress update equations and Poisson equations, thus realizing full-wave field numerical simulation.
It improves the accuracy and reliability of acoustic wave propagation in porous piezoelectric media, enabling accurate capture of multiple wave modes and providing a reliable numerical tool for the optimized design of piezoelectric ceramic transducers and the mechanical analysis of piezoelectric bone tissue.
Smart Images
Figure CN121787146B_ABST