Three-dimensional finite element simulation of magnetic-mechanical-electrical coupling in layered cylindrical multiferroic structures

作     者：Song, Ruiyu Zhang, Juanjuan Weng, George J. 

作者机构：Lanzhou Univ Coll Civil Engn & Mech Key Lab Mech Environm & Disaster Western China Minist Educ China Lanzhou 730000 Gansu Peoples R China Xi An Jiao Tong Univ State Key Lab Strength & Vibrat Mech Struct Xian 710049 Shanxi Peoples R China Rutgers State Univ Dept Mech & Aerosp Engn New Brunswick NJ 08903 USA 

出 版 物：《MECHANICS OF MATERIALS》 (材料力学)

年 卷 期：2022年第175卷

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Hui-Chun Chin and Tsung Dao Lee Endowment Program [LZU-JZH2516] Fundamental Research Funds for the Central Universities [lzujbky-2021-kb03] National Natural Science Fundation of China Open Projects of State Key Laboratory for Strength and Vibration of Mechanical Structures [SV2021-KF-08] NSF [CMMI 1162431] 

主　　题：Layered cylindrical multiferroic structures Magnetoelectric effect Field distribution characteristics 3D finite element simulation 

摘      要：The excellent magnetoelectric (ME) performance of multiferroic structures under room temperature has inspired a wide range of applications in smart devices like energy collectors, ME transducers, neo-antennas, etc. Starting from the constitutive equations of ferroelectric and ferromagnetic materials, a three-dimensional (3D) finite element simulation model was set up to investigate the ME behaviors of the cylindrical structures consisting of Terfenol-D and lead zirconate titanate (PZT). Then the solid mechanical module, electrostatic module and the magnetic module are coupled to calculate the mechanical, electrical and magnetic properties of the components and the structures. The calculated ME coefficients were in good agreement with the experimental data. The results show that P/T and T/P structures reach the maximum of ME coefficients at different bias magnetic fields, approximately 2.5 x 104 A/m for P/T structure and 4.8 x 104 A/m for T/P structure. The maximum value of alpha E31 in the P/T structure is twice that of T/P structure. Moreover, the distribution of magnetic, mechanical, and electrical fields of the composites are also analyzed. The results show that the magnetization of the ferromagnetic material exhibits a non-uniform distribution at low magnetic field, the stress concentration occurs at the Terfenol-D and PZT interface, and the electric potential of piezoelectric material is non-uniform in the plane. Finally, the influence of the interface characteristics on the ME effect is also studied. It is found that, the thicker the interface and the lower the Young s modulus, then the smaller the corresponding ME coefficient for the P/T structure.