Dynamic Equivalent Modeling of Acoustic Metamaterials

Nansha Gao is currently Associate Professor in School of Marine Science and Technology, Northwestern Polytechnical University, P. R. China. He received the B.E. degree in process equipment and control engineering from Northwest University, China, in 2010, the Ph.D. degree in mechanical engineering from Xi’an JiaoTong University, China, in 2016.  Prof. Gao has published over 40 International SCI. journals; 22 International and Domestic patents; and 3 academic monographs. He presided 8 research funds, including National Natural Science Foundation of China, et al. Prof. Gao’s research interests includes materials physics, sound wave control, and acoustic metamaterial design. Jie Deng serves as Associate Professor in Northwestern Polytechnical University. He received the PhD degree from the School of Engineering, Universitat Ramon Llull, Spain, in  2020, and won the title of excellent doctoral dissertation (Cum Laude). In 2021, he received  the second PhD degree from the School of Mechanical and Transportation Engineering, Chongqing University, China. He has authored and coauthored over 20 journal papers. He mainly studies the vibration and noise control, bending wave manipulation and vibration energy harvesting of acoustic black hole structures, as well as the theoretical research and Structural design of underwater and air vibration and noise control.

Chapter 1. Introduction.- Chapter 2. Basic theory of acoustic metamaterials and dynamic equivalent inverse problem solving theory.- Chapter 3. Theoretical model for solving inverse problem of dynamic equivalent medium of periodic beam and bar structures.- Chapter 4. Theoretical model for inverse problem solving of dynamic equivalent medium of periodic thin plate structures.- Chapter 5. Study on vibration characteristics of gradient bar based on dynamic equivalent medium inverse problem solving theoretical model.- Chapter 6. Study on low-frequency band gap mechanism of multi-layer slit tube structure based on acoustoelectric analog equivalent model.